Sergey Tihon's F# Weekly blog is a weekly-updated website that lists recent F# news and articles.
Mark Seemann's blog also has lots of interesting F# articles, usually focusing on how to design your application.
Scott Wlaschin's F# for fun and profit is a blog for experienced developers. He describes complex patterns and concepts clearly and with a good sense of humor. Also, check out his talks on F# and functional programming topics.
StackOverflow can be used to search for your problem and see if it has been answered already. You can also ask and answer questions.