im no expert but an ipad mini 2 will work great. a good way to improve is to pick just 1 or 2 heroes that your interested in (i recommend watching a recent pro match and picking heroes that stood out to you) and then just binge play those 2 hereos and get really good with them. this game doesnt have a lot of events, only once per season and thats for the pros remember that this games is best once you reach ranked, which you wont be able to unlock unless you have 8 hereos i believe so save you...