anyone playing on iphone?

downloaded it on my girlfriends phone today...she's not going to see her phone much from now on

any general adive? I guess I'm going to read the whole topic right now.
started today, played some random games and bought some boosters, won the 2 easiest cups and bought some players on the market
playing 4-4-2 and my team currently has 3 stars...
I'm a total noob at UT because I only played against friends until today but goddamn...it's addicting