verbs
Need an help with trennbar verbs, where can I find exercises over it?

Question

Answer

Just google "trennbare verben übung" :)

Answer

https://deutsch.lingolia.com/it/grammatica/verbi/verbi-separabilinon-separabili
In italiano!  :)

Answer

http://www.mein-deutschbuch.de/lernen.php?menu_id=225

Answer

You may want to check out http://www.deutschseite.de/grammatik/trennbare_verben/trennbare_verben.html for an explanation and many exercises.  This is also a great website for learning many German grammar items via non-technical explanations.