You can begin learning in neuroscience by doing a lot of reading on your own. A good textbook kind of book is The Student's Guide to Cognitive Neuroscience, 2nd Edition, by Jamie Ward. Start reading popular books about neuroscience, and even take some MOOCs about neuroscience. I have a good friend who is not a scientist, (her degree is in art), but she knows a LOT about neuroscience! Don't be intimidated--at first there will be much you don't understand, but that is normal