Rowing technique is complicated and will require many years of training to truly master.

Here are a few pointers to get you off on the right foot:

Correct technique:

Bad sequencing:

Crooked arms:

Opening your back too early in the catch:

Overreaching:

Other videos:

https://www.youtube.com/watch?v=zQ82RYIFLN8

https://www.youtube.com/watch?v=g4jiOSEigN8