Graphics tablets do take a little getting used to, but once you have tried one there is no going back.
I've got a Trust A4, but I know they do an A5 one for about £39 on Amazon (or they did when I got mine).
Charlotte and I have written sepreate
reviews and came to pretty much the same conclusions.
Wacom are probably the best, but my Trust was about £100 cheaper, so I rate it good value.
You still use the same tools as with the mouse - they are just much easier to control! The image stays on your monitor - the tablet is only a 'blackboard' you use the stylus on. The reults of your drawing are displayed on the monitor same as the mouse.