Most of the things @I_Am_The_ICT says are for marketing purposes but some of his concepts actually work if you back test them and develop a certain edge.
My advice to anyone starting trading would be to learn from multiple mentors and take what works for you.
There are essentially 9 types of orderblocks as listed below.
1. Bearish Breaker
It is characterized by a stop run causing a higher high and then a break of structure (BOS) which causes the lower low to be formed.
(Example Included)