This is basiclly for beginers. After a while you get to know the game better and you'r able to find out
what formation works best for you.
Btw.. Im on Lv 18 and the formations i've used are listed up there.. those are my personal top10s
But yeah, as everybody knows there's no best formation and it always works in a different way.. that's why the game is still up after 5 years and a half.