it is virtually impossible for individuals to compete with HFTs and day trade for a living, contrary to what course providers claim. It's tempting to fall into make money online schemes, but you have to be aware of what's actually possible and what is just hype.

Research
The Cross-Section of Speculator Skill: Evidence from Day Trading
https://papers.ssrn.com/sol3/papers.c...
Day trading for a living?
https://papers.ssrn.com/sol3/papers.c...