I can vouch for swing trading. It's more fun than day trading as you don't have to sit there staring at the screen the entire time, no FOMO for having a life, and it's safer when you're new.

You can do swing trading as low as $100 and still do nicely. In fact, I would suggest starting low so you don't lose much if you make a few mistakes. Once you are profiting regularly then you can go ahead and get more coins to toss into your swing trading. The prices fall around December-February as folks sell off for tax reasons, so you should have a solid grasp on things if you start with $100 right now.

Personally I would suggest a popular alt coin instead of bitcoin or Etherum initially. Staking coins are more stable at the second with things like Ripple and Beancash doing fairly well for Hold and swap alike. Litecoin is a popular non-staking coin as is Doge, though both can be less stable.