I come from an institutional background so I cant say I have heard of Andrew.
However, when acquiring any knowledge it is best to be agnostic and learn from as many different sources as possible. They are plenty of videos on YouTube before you give your money to someone you don’t know.
In building your own trading process you learn the reasons why something does not work rather than just being told and asked to blindly follow.
Well that is my opinion.
How long have you been trading for ?