Pathways

LingQ aims to help students learn a language by providing interesting, real world content. Supported by tools to build fluency, the app tries to focus more on student motivation than the heavily prescripted pathwasy of other apps.

italki serves as a meeting place for language students and teachers to meet. By creating a specialized marketplace for language learning, it makes it easier for teachers to advertise their services, and gives students information to help select a suitable tutor.

Coursera manages online learning programs from many univiersities and other institutions. While not focused exclusively on languages, there are a number of courses that offer a guided progression in a language.

Codecademy offers both free and paid options to learn a variety of computer science topics. Besides written lessons, the site features virtual coding environments that allow users to develop projects and receive feedback on completing preset tasks.

Lighthouse Labs is one of the numerous coding "bootcamps." They focus on offering a relatively fast way for individuals  to become competent in coding. Adults looking for a career change are a major target audience.

This site offers a way for programmers to connect, share ideas, and ask for assistance. It creates opportunities for independent learners to replicate some of the social interactions that would be present in face to face training or work situations.

A US based leather studio, Corter Leather regularly publishes educational videos on leatherworking techniques on YouTube. 

Skillshare is a platform for people to create and sell courses on a wide range of topics.  The site has a very strong presence in creative subjects. 

Another independent artisan, Stock and Barrel offers a paid video course on turning leather crafting from a hobby to a business.