This hand out (passive imp with infinitive) can help you with the impersonal use of the passive (using infinitives) and this one has examples and translations ( passive_voice ).

We all love listening to and watching people. Here is Jennifer ESL in youtube who is explaining the. Explanation with examples of passive forms Loads of exercises from different sources: Better English,  ODL Or try what other people have bookmarked inDelicious, where people bookmark their favourite links and webs. This one was the best, with explanations plus exercises.