There are thousands upon thousands of quick classes you can take based on your interests.... Design, Crafts, Fashion, Film, Business, Personal Finance, Health and Fitness, Game Design, Marketing, the list goes on and on. You can customize your interests or just scan the latest trending classes to seek if anything peaks your curiosity. Most of them are less than an hour and a half broken down into several 5-10 minute sessions that teach you USEFUL skills and tricks. You can devour a whole class in one sitting or just watch a session here and there until you're done. There's a project you can do and post in the class community or just check out what other people have made based on what you just learned.
It's just super cool and, while I may not stick around once it jumps up to $12.99/month, I am LOVING having this resource right now to try new things!
I highly recommend you check it out! Maybe someday I'll teach something there, who knows? :)