There are great rewards when writing a book for the first time. There is a great sense of accomplishment by the individual person once they have a complete manuscript in their hand.
The other reward is obviously money; if you write a good book that is marketed correctly you will receive a reward.
Depending on how well you market your book will depend on the size of the pay cheque.
The first step to writing a good book is: Writing
Start on your computer or with a piece of paper and start writing; don't go back to correct spelling mistakes, grammatical errors, sentences that don't make sense. Just keep writing.
Set yourself a target each day, say you want to write 20 pages in a day, then stick to it and do it.
In a short amount of time, hopefully in less than two weeks you will have a rough manuscript.
The next step is to get your book proof read and copy edited. The copy editor will make any grammatical changes, correct spelling mistakes and get your book reading well.
You then need to design the layout of your book, this is important because the book must have sufficient gaps, payout in the correct paces so the readers don't get tired.
You then need to design a cover for your book, you can do this yourself or you can find a cover designer on the Internet.
Next you need to get an ISBN number; you can usually find these on the Internet. You can buy these from a few sources; the best price I have seen them for is 55.00.
All books need printing, and you need to find a printing company, I would suggest Gardeners or Book Force. Upload your book to their websites; they will take care of all the printing and distribution for you.
The penultimate step is to deposit your books in the legal deposit library; this is a requirement that 6 copies of each book written need to be deposited to qualify as an actual book.
The final step is to register a book registration company; in the UK it's Nielsons Book Data. You need to find out what it is in the USA. If you are a resident there.
You all done, your book will appear on Amazon and other online book shops, all you have to do is go out and promote your book.
Get out on the road, hire a PR agency, get on your local radio station, write to the newspapers.
Good Luck and Good Writing.
Short note about the author