What do you mean by learn? Technical skills on a certain app or the "craft of the edit" which is the relationships between edits? They are very different, one can be taught and the other really cannot, either you are or you are not a video artist..
Many can be very technically skilled, but lack the artist's soul to be video artists, video should be thought of in the same way as painting, you are painting a frame using video, audio, the way you grade, the relationships between each edit, this comes from within...I am a video editing artist, I can edit so as to send a message, but I cannot paint with a paintbrush...
In the end it is about developing your own technique, your own voice as a video editor, the technical skills are easy, just get the app and start using, it soon becomes easy, but what frame to edit on, what volume to set the audio, a j cut, an l cut, wipe or dissolve...that comes from you, inside, what feels to you as the best..no one can say it is right or wrong, does it help or hinder the edit? Only you know...