Hi merylyn619! Are you from Estonia by the way?
I suspect you are more likely to get a response to your questions if you get to know us first and we get to know you. I know that I personally am more likely to spend time answering questions if I know someone than if a total stranger asks my opinion.
Your questions come across as: 'do my homework for me'. How about telling us more about the project you are doing and why you have chosen Terry Pratchett and Discworld for your project.
I hope you don't think I am being unfriendly, but put yourself in my place. Why would I want to spend time typing out a load of answers to questions from someone who does even introduce themselves?
Wyrd bið ful āræd.
"Coffee. The finest organic suspension ever devised. I beat the Borg with it."
- Capt. Kathryn Janeway