Well it depends on the book. Honestly I don’t any paid books that could significantly promote your trading skills, just public information under the sauce of author’s interpretation.
You can look for free books like Chris Capre’s price action, technical analysis bible from Murphy or COT trading books (forgot the author). Also look for sharpe&bailey investment calculation book (pro level), check webinars from fx street and hotforex webinars.
Ask me any questions about trading if you have.
More practice will giving more experience and get new lesson, might demo account is free place to forward test skill before start in real account, spent time in learning before spent money to investing because forex is risky business
There is always more to be learned. However, you should open small live account and develop a trading strategy. Trade, make mistakes and learn from your mistakes. That is how you can get a real experience. Nothing is more valuable than that.