I would also say don't rush into buying stuff until you see what you need as you go along.
I bought a kneeboard while doing my PPL-A in Florida, and discovered that, because I have to sit on cushions (by dint of being slightly challenged in the height department) it fouled the yoke and so I can't strap it onto my leg!
I've now got a clear, A5 sized map case from a local climbing shop into which I put a bit of white card and onto which I sewed a velcro strap. It only cost me £5 against the £30'odd for the kneeboard, and it wipes clean after each use.
The kneeboard has to sit to one side, strapped in, and is pulled out when I need to look at my plog.
Talking to other folk at the Flying Club and seeing what they use and recommend is another way of finding out what may suit you.