There are so many useful websites for writers and authors, it would be impossible for me to include all the relevant options. The sites I'm listing here are ones I personally enjoy or have gotten the most use out of.
This list is in no particular order, so dig through and see if you find something you can use! Discovered a handy resource you never knew you needed? Send me a message and let me know! Have a website you refer to often for help? Let me know and I may include it here!