From a practical point of view, it's worthwhile spliting the information into that which you will need when the engine is running (e.g. signal lights/overtaking rules etc.), and that which is mainly needed in flight planning (e.g. Weather & License Minima/What documents an aircraft must carry etc.)
I, like most student pilots, found Air Law one of the more dificult subject to learn. My sucess in the exam came through :. .i) Self Testing, using the Confuser. .ii) Imagining how I would use the information - creating situations in my mind. . .iii) Studying the information over and over again.. .iv) Imagining the consequences of not learning the material - court appearance, body bag etc.
Stick with it, it will begin to stay in your mind after a while.