It sounds to me as if you need to get a bit of solo navigation practice before even thinking about a GPS. If I were you, I'd only consider a GPS once I was fully confident in my ability to navigate by map and compass. Once you have these skills to a reasonable standard, a GPS can make life easier. But if you go staright to GPS before being fully confident at basic nav, you may never achieve good basic nav skills and that will be a major hole in your skills as a pilot.
It really is true that a GPS should only ever be an aid to navigation, not the primary means.
Once you start flying around on your own, it probably won't take long to aquire these skills.
SSD