Learning a Champ
So I've been playing League casually for nearly the beginning of this season (after a two year hiatus) and I really want to limit myself to a few champs to play during Unranked Rift. I've also been playing a lot of ARAM to learn team fighting even though it doesn't really work b/c the champs I receive are ones I don't know how to play. Should I continue to play ARAM and learn them or stick with Rift and pick a handful to learn? Also, I tend to notice that the items I build are ones that are recommended for me to build in-game. Is this a good thing to do or should I build random items to play around with? I forgot to mention this, but I tend to use mobafire for recommendations for item builds and guides but is this a good thing to do or should I just build randomly (within reason)?