This thing is huge and will most likely keep you busy for weeks! There is a scrivener template available here.
I’ve skimmed through this one to help me organize my world building document, it is pretty easy to follow and get started with basic ideas.
Fantasy Worldbuilding Questions
A lot of specific and detailed questions to help you create believable settings.
Holly Lisle’s Create A Language Clinic
This one has helped me a lot with making languages a lot easier to make and keep track of.
An American English writing style guide.
The Emotion Thesaurus: A Writer’s Guide to Character Expression
A must have tool, especially if you struggle with show vs tell.
A companion guide to The Emotion Thesaurus
If you love to create detailed characters, this is a great book to have to walk you through the process.