RE: first time flying !
If you need to fill in a whole you can use light "SPAK" filla (that's what its called in Oz - hopefully same name in US) from Selleys. However, if really small damage just tape. For future missions tape (packing tape) the leading or trailing edge (depending on whether pull or push prop) so that when it happens next time the prop strikes tape no damage is done to the wing.
Sounds like you are going well.