Hey Melanie, there was a free course you could do through freemoney.io but they had to take it down because their system sort of promoted Bitconnect, my advice is to search up any videos on YouTube about BTC and what a block chain is, once you understand that it should give you more of an idea, but my opinion is that all the original alt coins that have been around since the start are gonna see massive gains so you should look into that also, and thanks for the upvote and resteem😊