[UK] Tips for first time investors

Hello everyone, I would like to collect information to guide and help first time investors with crypto.

There are a lot of resources out there but it can be confusing and overwhelming sometimes. So, my idea is to touch a few point with some questions here and ask to the most experts to dress this questions. (you don't need to answer all of the below questions)

1. What do you recommend before invest any money?
2. Based on what do you buy a specific cryptocurrency instead of another one?
3. What's the minimum budget recommend to start?
4. What's the best crypto wallet that you recommend?
5. Do you recommend trade, stake, mine or hold your crypto and why?
6. Do you keep all your crypto always on Binance?
7. What's the best platform you recommend to keep track of your transition (for taxes) and why?
8. Is there a minimum yearly income that you recommend before reporting taxes? (example, if you get less than £4000 yearly)
9. Do you need to be registered somewhere to declare your income from crypto?

I'm not sure if I missed something but feel free to add more if you want.

Thank you!