I’ve mentioned SFWA in a few posts in relation to magazine submissions. SFWA is a professional organization for science fiction and fantasy writers founded in 1965. There are some privileges afford to members only, but the website is a gold mine of information. Even for those who don’t write SF/F.
There are resources for educators and readers, a blog, they sponsor Writer Beware, provide links to craft tips and tools, and host the Nebula Awards.
May the Muse be with you,