I have been spending a lot of time trying to identify wildflowers lately. I've found two things helpful 1) library - get lots of books with lots of pictures and 2) internet is good for local or regional plant and animal info. I spent two weeks trying to identify a flower found in a local regional park. I found it in a online wildflower guide for that park! lol Don't ask me how it took me two weeks to follow that link haha
To me the main thing is to then actually remember the names I've 'learnt'... that's a good memory challenge @steven-patrick...