DongWon Song, R. F. Kuang, Maggie Stiefvater, Susan Dennard, Patrice Caldwell, Yanyi, and many, many others have blogs with extensive resources for plotting, drafting, revising, querying, and beyond. My personal favorites include:
Publishers Marketplace is a database of book deals—you can search by agent, agency, and publisher to find agents who have sold similar books to yours. Membership costs $25/month, so I only pay for this during seasons when I’m actually querying 🙂 Also, keep in mind that deals can be announced months after the fact or not at all, so even if an agent doesn’t have PM deals listed, they could have a lot of sales coming down the line!
Querytracker is another great place to search for agents and track response times. Premium membership ($25/year) allows sorting by response times and access to additional query data.
Manuscript Wish List is a database where agents sometimes post specifics of what they’d like to see in their inboxes—e.g., if they wished they had represented your comp title, are suckers for heist stories, etc. Some agents also tag their #MSWL on Twitter.
QueryShark was where I learned what a good query letter looked like. Checking out the flap copy of comp titles on Goodreads is also great for this, as is a second (or third, or fourth, etc.) set of eyes.
Mentorships and Networking:
Author Mentor Match, SFWA, DVMentor, and Avengers of Color have great mentorship programs for getting plugged into the online writing community! I’ve participated in the first two, either as a mentor or mentee, and have heard awesome things about DVMentor and AoC from friends and former mentees. (Note: the SFWA mentorship is more career-focused than revision-focused; you don’t have to be a SFWA member to apply to be a SFWA mentee.)
Conventions such as Flights of Foundry, 4th Street Fantasy, WisCon, the Nebulas, FIYAHCON, and DVCon are great places to meet other writers, attend craft panels and workshops, drink coffee with cool authors and agents over Zoom, etc.
Additional continuing education:
In SFF, Cat Rambo’s Academy for Wayward Writers, Clarion West, Odyssey, Writing the Other, and Gotham Writers Workshop offer online classes on various topics to level up your writing skills. I also highly recommend the one-week, in-person Viable Paradise workshop because it’s awesome. If you’re available for six weeks in the summer, check out Clarion West and Clarion. I’ve also heard good things about Taos Toolbox, which is two weeks in-person, and Futurescapes, which is about a week long and offers workshops both online and in-person.
Catapult, Grub Street, and Kundiman offer quality online workshops in general fiction, creative non-fiction, poetry, travel writing, humor writing, and more, the latter with a particular emphasis on BIPOC writers and experiences.