Honestly I started just a month ago.
I watched my initial investment triple in days. Then sadly I watched it crash because I didn't know better.
I've now dug my heels into learning how to day trade and hodl for long term.
Tons of great info out there, and tons more that will confuse you even more.
I've learned a ton since finding @CryptoChoe and @PhilakoneCrypto on Twitter. Very insightful info given freely over the course of the day (I swear these two never sleep!) @PhilakoneCrypto even has a bunch of training guides on his SteemIt account.
Aside from that, day trading is about small gains over and over again. Sometimes they'll be huge bursts, and sometimes not so huge.
Also, beware of pump and dumps and learn how to recognize them so you don't get stuck holding the bags!