When learning to fly there is a myriad of paperwork, or so it seems at first. Some of it legal, some of it related to training and theory.
Listed below is a short list of links to some of the required documentation on the internet, nothing here can't be found from other sources it is provided however to save you some time in looking.
It should be pointed out however, that at the PPL level an intimate knowledge of these documents is not expected and the necessary knowledge requirements are covered in the many texts available on the subjects.
At a commercial level this list intended as a quick reference to enable you to find the documentation you require in a timely fashion, the interpretation of that is left to you.
Rules & Regulations
The law is laid down in the Air Navigation Order, which is the first place to look when trying to determine legal issues.
Example Content
Licensing
Licensing requirements and outline training syllabi can be found in JAR FCL-2
Medical Requirements can be found in JAR FCL-3
NB these links are to section 1 of these documents only, if you want the full documents you must purchase them.