I think it's good to have 100 bucks to start trading. You need to learn somewhere right? My advice would be to chop it up in smaller amounts, and do some research on projects that interest you. Check out some top 10s or top 100s of what everyone else is following and research why they are following those projects. Read whitepapers, check out community forums etcetera. Literally do research, that's just about the only way you will understand the projects you are willing to put your money in and crypto in general.

It takes a long time (speaking for myself) to understand the how's and why's of cryptocurrency and various projects. I'm not saying I'm a big time investor, not by a long shot, but have invested close to 2000 bucks in different projects. It has not been very profitable yet, but I'm confident the cryptocurrency market will turn bullish again. It is just a matter of time.

Good luck and enjoy the rabbit hole.