Hello.

I will really appreciate some help.
1)Is it possible to use -ing after "targeted on": "The programme is targeted on improving..."
2)Which proposition is better (or possible)in the phrase "in/at the resort of Acapulco"?
Thank you for all your help.

1. That's awkward phrasing. Try this: The program targets improving...

2. I think you mean PREPOSITION, right? The preposition you choose depends on the entire sentence. Out of context, it's hard to tell. Post the whole sentence, and it'll make sense.