Try making flash cards or revision notes and stick them around your house at eye level. You will sub-conciously read them and learn them without realising it. Stick them around your mirror, or even your laptop/computer screen. I have several Chemistry notes in both these areas purely because I spend much of my morning in front of my mirror and much of my evening working on my laptop. You will need to revise on top of this, this is not sufficient to learn the entire Chemistry course inside out, but this will lay a foundation of knowledge for you to build on. Remember to keep the notes simple and use brightly coloured pens or paper.