Hi, with regards to the drawing tablet. I prefer something that I can used it comfortably with my hand. Personally, I would recommend any size but 6x8 tablet will be better because it has dual monitors and it works good. You may choose between two manufacturers that I know. Those are Wacom and Aiptek.
Wacom is a very good drawing tablet especially for beginners and even professionals. However, if you want to choose from the top picks. You may check below the best affordable drawing tablets that I found in the internet.