A PLN is a Personal Learning Network and it is made up of all of the websites, webtools, blogs, social networking sites, and other online gizmos and gadgets that you use to gather information.  My PLN is how I find most of the cool sites and web tools that I list here.  I am so thankful that there are other educators out there who love to share what they know.  I truly belive that sharing is an important and necessary component of being a successful educator.   
A BIG THANK YOU to the creators and contributors of the sites in my PLN.  Without them I wouldn't know of half the websites and webtools shared on A Teacher's Bag of Tricks.  Please take a moment to visit these sites as you might like to add them to your own PLN.
KB...Konnected created and maintained by Karen B.
Kleinspiration created and maintained by Erin Klein
Ladybug's Teacher Files created and maintained by Kristen
sites4primary created and maintained by Jill
Teaching Blog Addict created by Tamara Chilver but tons of teachers contribute
Teaching with TLC is a blog created and maintained by Tamara L. Chilver
Teched Out Teacher is a blog about great technology tools to use in your classroom
Technology Rocks.  Seriously.  is a blog created and mainted by Shannon
The Organized Classroom Blog created and maintained  by Charity Preston
What the Teacher Wants is a blog created and maintained by Rachelle and Natalie

Online Learning Sites:
Classroom 2.0 Live  So many great webinars, so little time!
Edutecher  Share and get so many great teaching ideas from this site
Learn Central  You can attend or even host/conduct your own webinar on this site
Simple K12 A "must-add" to your PLN
Edmodo  A secure social networking site for schools; once you join you can connect with other teachers and classes to share information
We Collaborize  is a free online learning platform great for the blended learning approach;  Webinars are offered to help you learn to use Collaborize Classroom more effectively
Other Websites:
cnet is a helpful site with tech news and reviews of popular products
Common Sense Media  Great advice about all sorts of media; this site also offers a free technology safety curriculum for schools
eSchoolnews  Keep up to date on the lastest technology news that affects schools 
Teaching News News and links about education