How to use epilator properly?

I ended up buying this epilator which was recommended by a bunch of people, it’s coming tomorrow and I’m wondering how to use it? I see a lot of people saying to do circular motions or straight up like you’re shaving, not to go over it more than once, etc.. I need to know exactly what I should do so I don’t mess this up, when I wax my legs sometimes, it’s not painful at all for me so hopefully it’s the same with this.