This is how I study Materia Medica:

I make mind maps of the remedy. They stick in the memory because of visualisation. I also 'get into' the remedy and experience in my mind/body the symptoms produced (like acting out). Also studying the remedy in its natural form and how it acts, where it is found, its composition. If you really get inside the remedy you don't forget it. And if you see a symptom picture of a remedy in someone, you never forget it.

These are my ways and they work for me. My two cents worth. Not denouncing any other way. Just thought I'd share my way.

Cheers Scruffrat