Hi there.
In my beginner experience I only used AVR micros. Why? Because some years ago I found
this book which helped me a lot understanding the basics of micros etc. Also it helped me using my arduino to program the AVRs.
Now I think it's time to expand my knowledge with PICs and perhaps ARMs. Is there any resource comparable to the book I mentioned about them, or any books you would recommend about them?
Also: is it valuable to buy a PICKit 4 to program them or is it doable via arduino? Is there any alternative for ARMs?
Cheers and sorry for the newbieness in this matters.