If you buy a Kindle, you will need to buy something like
this (which I have myself and love it) to keep lists and such.
You can take notes within a book without anything additional, but you need an app if you want to use it separate from your books.
Oops, I just remembered that apps are not available outside the USA. How stupid. Forget the Kindle unless you are willing to give up the notepad or register an address in the US to get it.