Correct. We use the infinitive form after the 3 modal verbs (in any verb tenses and modes): potere, dovere and volere. All of them are irregular. They are conjugated in Presente Indicativo like this: Potere -> posso, puoi, può, possiamo, potete, possono. Dovere -> devo, devi, deve, dobbiamo, dovete, devono. Volere -> voglio, vuoli, vuole, vogliamo, volete, vogliono. It's a shame that these important verbs aren't mentioned until now. They should have a long explanation.
It's important to mention that not only these verbs can be followed by an infinitive, but these must be followed by the infinitive. Here is a good explanation about modal verbs: http://italian.about.com/od/verbs/a/italian-modal-verbs.htm