hello evrybody hello i come back if you want to practice with me please send me a message

i dont understand when i have to use prepositions I ve been studied for 6 months and i dont understand when i have to use prepositions (to, for , on, in, etc), I want to know when and in which case i have to use it, also i have translate problems with "que", as a matter of fact i would like to practice on skype with english speakers and I could help with spanish