I'd like to share a website with you called Writer's Universe. It is the best site I've found on the internet for writers.
On this one site you can find Grammar: style, spelling, use of words, and more; Craft of Writing: POV, show and tell, character development, writer's block, revision, dialog, and plot; Manuscript Basics; Writer's Resources; Genre; Business of Writing: publishing, copyright, contracts, rights, and agents; New Writers: many many tips.
Actually, Writer's Universe has been defunct for some time, but it's still available on the internet. The only drawback is that some of the links won't work now. WU was originally operated by Cyndi, and you can find several places on the site that advise you to contact Cyndi if you have a question. Of course, since the site is now defunct, Cyndi no longer responds.
But it's still a great site. I had a link to WU on my site, and after the site went defunct, the link stayed and still works. I recommend paying a visit and checking it out. to get there, go to my site at SSS and then click on Tips on Writing. Then scroll down to Writers Universe, click, and you're there.
Unfortunately Writers Universe has now disappeared completely from the internet. A damn shame.