Diversity and Quality of Skillshare
There's a lot of classes, some pretty good some less, the diversity and amount of classes make up for the less good ones but you might certainly need to filter the classes to match your level and your tools. There's for any skill level, from pro to absolute novice. I've been learning 3d modeling with a free sponsored trial for a month, so far so good, I'm now advanced in 3d modeling.