Although I am many years younger, and work with computers every day as my job , I also decided to write a book some years ago. It took four years, and a lot of learning (in addition to the actual writing) but I finally have it on amazon, and although its never going to reclaim the costs I incurred during the writing, it was as much as an achievement as anything I've done. Very rewarding. Good luck with your project!

If you've got any questions about the self-publishing process, I might be able to help. Drop me a PM.