They do have paid classes but also some nice free ones. I like how beautifully the website is presented and how clearly taught the tutorials are.
Following the simple instructions I created this cute virtual washi tape.
How cool is that?! I love washi tape so to make some is really cool and a lot of fun. Sorry for the bad quality photo it's of my computer screen!
Anyway go check them out there's also tutorials on watercolour washes and other nice things :)