There are lots of resources you can access for information while you are writing and revising. You can find: Print on Demand info; up to date Canadian permissions guidelines; style guides such as CMOS and dictionaries like Canadian Oxford or Webster’s for Americans; grammar checkers like this; and answers to these questions:
Why does editing cost so much?!?
Why can’t I just use the Word index generator for my book’s index?
Ultimately, you need a human to analyse the nuances of language, tweak subtly and maintain your voice. Computers can’t do that. Editors work alongside you.