Check out Self Publishing, which is an excellent web site dedicated to helping people publish their own material. Click here, here and here for some similar web sites. There are also many publishers who will take manuscript submissions.
Go to any bookshop or visit amazon.com online and purchase a book on book-writing. There's so much you can learn from reading about book-writing. Aother idea to type 'book writing' in a Google search engine. You'll find lots of free advice online.
3. Writing Guides:
Obtain a writing style guide that deals with spelling, grammar and lots of interesting things like that. It will help you become a better writer and it's always good to have a reference book like this nearby.
P.S. A few final thoughts on 'books':
"But, my child, let me give you some further advice: Be careful, for writing books is endless, and much study wears you out." [Solomon – Ecclesiastes 12:12. NLT]
"When you come, be sure to bring the coat I left with Carpus at Troas. Also bring my books, and especially my papers." [Paul to Timothy – 2 Timothy 4:13. NLT]
"Write down what you have seen — both the things that are now happening and the things that will happen." [The angel to John – Revelation 1:19, NLT]
"Jesus also did many other things. If they were all written down, I suppose the whole world could not contain the books that would be written." [John – John 21:25. NLT]