Well for a good breakdown of what the top coins in marketcaps even are id start with coinmarketcap.com. There youll see everything listed out and you can filter lists and click on coins to see performance histories and links to their websites etc. As far as getting more familiar with the industry in general i highly recommend watching Cryptosrus on youtube...super down to earth tell it like it is guy who has been in the crypto space for a while and made mistakes of his own along the way. There also plenty of other channels on youtube that can help explain things but just be prudent because some channels care more about entertainment than informing