What are fundamentals of trading?
The fundamentals of trading are simple. It is to have bought something, the price of which is rising or to have sold something, the price of which is falling. In actual fact, we’re not buying or selling anything material - buying simply means we are taking long positions in the pair in the hope that price will rise - selling means we are taking short positions in the pair in the hope that price will fall.
The other side of the coin can be equally simple advice - don’t go long if price is falling, don’t go short if price is rising.