Hi Jcasia, I don't think it's ever too late to get on board with Ethereum or many of the other crypto currencies. I bought Etherem in early 2017 for $45, and as of this answer it's increased in value to $288.49, however digital currency is volatile, so today it might be $288.49 and tomorrow it could be $267.54 or $321.93.
In the long term I recommend those newer to cryptocurrency buy and hold (a small amount at first) until you get to a point where you feel good about your profit, then sell it if you like. Or... if you're in it for the long term (years) just hold it as an investment for your future... cryptocurrency is not going away. If your crypto goes down in value that's OK (the stock market goes down does too), just hang on, let it ride and wait for it to come back up... it always does. Buy low and sell high.
I recommend "Coinbase" if you want to get into crypto easy, you can buy and sell Bitcoin and other altcoins there if you like. Wishing you the very best with your Ethereum!