If you're still hungry for publishing content (and you should be!!), here are some places where you can start:
FREE RESOURCES
Blogs about publishing/editing/etc.:
The Publishing Post - Posts short articles ranging from reporting to opinion pieces (unintentional title borrowing going on here from me).
Copyeditors' Knowledge Base - Gathered resources for self-employed/freelance editors.
The Scholarly Kitchen - Run by the Society for Scholarly Publishing, the Scholarly Kitchen aims “[t]o advance scholarly publishing and communication, and the professional development of its members through education, collaboration, and networking.” There is also an option to receive notifications when a new post goes live.
Jane Friedman Blog - With daily posts ranging from writing advice to motivation to industry opinions, industry veteran Jane Friedman's blog is an eclectic source for catch-all book-related information.
Publishing Trends - Provides reporting and commentary on industry news.
Newsletters about publishing (fantastic way to stay up on the industry drama news):
Publishers Weekly - Publishers Weekly (or PW) offers a bunch of free newsletters you can sign up for, but PW Daily is a genuine miracle. PW Daily is an ultra-short, M-F newsletter that summarizes pieces of publishing news in one sentence, with links to sources for those items you want to dive more deeply into. If you want to dip your toes into publishing news, PW Daily is the way to go.
Publishers Lunch - From Publishers Weekly, Publishers Lunch compiles news like Publishers Weekly and also offers "original reporting, plus a little perspective and the occasional wisecrack added in."
Shelf Awareness - Mostly book reviews & author interviews.
Horizon - Unique in its focus on the physical materials that go into book printing and has plenty of content on sustainable printing.
The Brief - A monthly newsletter from Clarke & Esposito, a company that "help[s] organizations grow revenues and better engage with their customers and communities." This newsletter offers analysis of trends rather than pure reportage.
Job boards (for PAID work):
Bookjobs.com - Posts jobs and internships and has a bunch of other information about publishers!
Publishers Weekly JobZone - As a heads up, PW doesn't seem to post internship opportunities.
Job Listings on Shelf Awareness - As a heads up, Shelf Awareness doesn't seem to post internship opportunities.
Job Board on Publishers Marketplace - As a heads up, PM doesn't seem to post internship opportunities.
Volunteer boards (for UNPAID work):
Catchafire - Volunteer for a nonprofit to write copy or edit!
r/BetaReaders - The Reddit for authors seeking beta readers (or beta readers seeking authors!).
Beta Reader Group on Goodreads - The GoodReads group for authors seeking beta readers (or beta readers seeking authors!).
Facebook - Facebook has a huge number of groups for authors seeking beta readers (or beta readers seeking authors!) (how many times can I use that parenthetical without everyone noticing I'm copy-pasting).
Freelance Websites (for PAID work):
Reedsy - A website made fully for connecting book-makers (publishers, self-publishers, orrr people interested in making a book for themselves) with freelancers, including copyeditors.
Upwork - A website made for freelance gigs, although Upwork has a reputation among freelance editors online for having below-average rates. Remember, US freelancers pay ~30% in taxes and also don't receive employer benefits like health insurance, PTO, and so on. Don't sell yourself short, and make sure to look at freelance editing rates before setting your own. The industry only works when everyone's pricing their labor fairly!
Fiverr - Another website made for freelance gigs, but some of the rates I saw posted are very low compared to industry average—like $10 low. Here's your daily reminder to price yourself fairly! Underpricing your work isn't just a headache for you, but it also hurts your fellow freelancers. And if you're interested in building up your resume while money is no object for you, I'd recommend volunteering at one of the many online magazines that run solely on volunteer work to leave paid work for people who rely on it.
COLD EMAILING - Many publishers outsource their labor and will rely on freelance editors to do fact-checking, line work, etc. Cold emailing involves emailing someone within a house or magazine (usually production editors) with your resume attached and offer to take any editorial test they may have. I'd recommend doing more research on this option before trying it out, but from what I've seen online, it is the best way for copy editors in particular now to get work.
NOT-FREE RESOURCES
Newsletters about publishing:
The Hot Sheet - Starting at $59/year, this biweekly (published every two weeks) newsletter is published by Jane Friedman, an industry veteran and author of The Business of Being a Writer (Chicago UP, 2018).
Publishers Marketplace - At $25/month, Publishers Marketplace sends out a newsletter made for publishing professionals, including data on industry trends, imprint performances, and recent book deals. They also offer a $10 fast pass, which grants you access to 24 hours or 50 pages of content (whichever limit you hit first).
Kathleen Schmidt - With a free tier with a weekly post option, Schmidt's blog has a paid tier starting at $5/month that offers insight in marketing and publicity, of which Schmidt is an expert.
Magazines about publishing:
Writer's Digest - Writer's Digest is aimed at writers seeking publication and offers writers advice on "develop their craft" and "how to get published." Writer's Digest publishes six issues for year, and subscriptions start at ~$15/year.
Publishers Weekly - Starting at $169/year or $15/month, get access to Publishers Weekly's premium content.
Guilds/Conferences/Associations - You might want to consider joining an association or conference that is local or specific to your editorial field, but I've gathered some of the big, national groups and events here.
ACES - With enrollment starting at an annual fee of $50/student at accredited university (and $100 for non-students), ACES offers their members the opportunity to network with other editors, keep up with industry news, and learn about editorial trends through their classes, where members receive a discount. ACES is for editors generally, not necessarily freelancers
Editorial Freelancers Association - With enrollment starting at $130/year (for the two-year plan), the EFA offers resources for freelance editors, including standardized rates. The EFA also has a job board where EFA members can claim work posted by interested companies and a membership directory where authors or other clients may pick up freelance editors.
MLA Conference - MLA offers its members a three-day program centered on a theme, allowing those "involved in the study or teaching of language and literature" to meet, discuss, and network.
Association of Writers and Writing Programs - "The AWP Conference & Bookfair is the essential gathering for writers, teachers, students, editors, and publishers. Join thousands of attendees, explore hundreds of events and exhibitors, and immerse in four days of vital literary community and celebration in Los Angeles!"
ACES Conference - A yearly conference for editors, held by ACES, including networking events, roundtables, and more.
Certifications - Always do your research. I've received very mixed advice from editors on this front. Many freelancers online claim that certification/education beyond undergrad is entirely useless, while industry editors have told me explicitly that the first step to freelancing is to get certification. The right decision for one editor might not be the right decision for everyone. Please note, too, that certifications are almost exclusively discussed in the context of freelance; if you're interested in working in-house, you'll probably not need certification, unless you're doing the Columbia course.
Poynter ACES Certification - Offering three levels of certification at introductory, intermediate, and advanced, ACES's self-paced certifications take around 12 hours and cost $150-250 for non-members and $99-175 for members.
EFA Classes - While the EFA doesn't offer certificates, it does have plenty of educational material posted on its website, and some of it is free!
An accredited university offering editorial certification - These tend to be the most expensive options, but you're also more likely to have a professor and classmates, whereas webinar-based classes tend to be more isolating. Here are some of the more well-known options:
University of Chicago - $6,700 for certificate in Editing, takes 9 - 36 months.
UC Berkeley - $3,600 for "Award of Completion" in Editing, takes ~18 months.
UC San Diego - ~$3,000 for Certificate in Copyediting, takes ~12 months.
Denver Publishing Institute - ~$5,000 (~$7,500 if in-person) for general publishing training, takes 4 weeks
Columbia Publishing Course - I think the editorial gods would have my head if I didn't mention Columbia University's publishing course, which most frequently comes up in discussions about further education for certificate programs. At $10,000 (covering room and board) for a six-week in-person program, the course is not cheap, but is one of the best known within the industry.
Books/articles about publishing, editing, book scholarship, etc. - LET ME YAP. There are so many books about editing history, theory, and practice. Learn how to copy edit! Learn about publishing's ongoing conglomeration (hooray dwindling job prospects)! Learn... Foucault! Preaching to the choir here, but books are magic, and you should read them.
The Book Business: What Everyone Needs to Know® by Mike Shatzkin
Book Wars: The Digital Revolution in Publishing by John Brookshire Thompson
The Copyeditor's Handbook and Workbook: The Complete Set by Amy Einsohn
The Family Business: How Ingram Transformed the World of Books by Keel Hunt
Front Cover: Great Book Jackets and Cover Design by Alan Powers
Is There a Text in This Class? The Authority of Interpretive Communities by Stanley Fish