To get started in learning to program a computer, do not just read a book, use one of the online learning platforms
No experience, all ages
Start with Khan Academy
https://www.khanacademy.org/computing
If you don’t mind learning what kids are learning
Adults
(If you don’t want to do Khan Academy, this one does cost a little bit of money)
- Choose one of the Web Development https://www.codecademy.com/catalog/subject/web-development
- Or https://www.codecademy.com/learn/introduction-to-javascript