You should try them, as well as reading the 'classics'. Most of the books here are very well written and have exciting and original ideas. A few have been included because the ideas are interesting even though they are not very well written. Also there are a few books that are well written and fun to read even though the ideas aren't very original. I have been thinking about this for years, and have decided that it is unhelpful to say what age group a book is suitable for.
Readers vary so much.
When you read one of my reviews you should be able to pick up whether the book will suit you. Some books published in the UK are not published in America, and if they are published in America, they may have a different title. When the book was published in America it was called Harry Potter and the Sorcerer's Stone, but it is the same book. If I can I will give the different titles. If you want to buy a book that is not published in your country, try an Internet book seller with a .co.uk address.