Because I'm a strong advocate for #WritersSupportingWriters, here is a list of websites I visit frequently:
Writer's Cafe: Online writing community where writers can post their work.
Agent Query Connect: Find critiques, reviews, and help from other writers!
Literary Rambles: Find reviews on your favorite agents!
Goodreads: Book reviews, discussions, awesome stuff.
Confessions: Cool blog written by a Literary Agent from New Leaf Literary.
YA Highway: Authors from around the world posting about writing and such.
Carly Watter's Blog: Another cool agent who posts on queries, submissions, and publishing.