There are many types of bhakti. Firstly, bhakti can be simply listening to discourses, having darshan, massaging God’s lotus feet, or even staying in the company of God and having a friendly conversation; even making Him laugh is a form of bhakti.

Then another type of bhakti is dãs bhav. One becomes God’s servant and carries out His commands without hesitating. For example, when Lord Rama instructed Hanumanji to go to Lanka, without thinking twice, he set off alone.

However, the greatest bhakti is ãtmanivedanam - surren- dering one’s self at God’s lotus feet. After that, we consider all our possessions to be His and offer them to Him before using them ourselves.

Yogi Bãpã used to speak of anuvrutti bhakti - one who lives according to the inner, unspoken wishes of God and His Sãdhu. So when they tell you to study or even do mãlã, to do that is bhakti.