The
Makeup Addiction subreddit has a sidebar with a few guides and tutorials for beginners. It's also a good place to post pics to get your look critiqued, if you're comfortable posting selfies.
Makeup Addicts is a smaller subreddit, so there's less of a chance of your post getting lost.
They have a very useful wiki with links to tutorials, youtube channels to check out, and even a guide to navigating reddit itself.
Makeup Alley is another good site with a lot of product reviews, as well as boards full of nice helpful friendly folks. Stay out of the cafe board if you want advice. They're almost as bad as we can be over here.