This training can be in a formal setting or an informal setting i.e. you may decide to go to a film school or visit YouTube to train yourself. Whatever the means of training, one thing is certain - you need to practice.
Here, I'm going to give you a list of 5 films that are about filmmaking that may end up taking the cross of having to go to a film school. By the time you finish these films, you may have learnt all the basics of filmmaking.