Struggling on which champion to choose?

First off, if your new and dont have enough Influence points buy your own champion, then go to the top of your page, and under your name and experience bar, there should be a person, click on it, and go to ''champions'', and on the left side, there is a box that says recommended, click on it, and it will show you a whole buunch of champions, those are the champions that Riot recommends, they are the easiest champions to play and master, what I recommend, is buy Master Yi for 450 Influence points, he is very easy to play, and very OP (over powered)