BackPacker, OK seen that way - but wasn't the OP referring to getting a license ? If you just want to fly around a bit without ever actually being PIC, that's perfectly fine. But as with all learning - and this is not limited to aviation - leaving large gaps between exercises/modules/lessons is not a good idea as you mostly have to re-learn part of the previous lesson. OTH cramming TOO much into too short a time isn't to great either, hence the problems some people have with the infamous 4-week courses.