Devote yourself to the study of books of wisdom and to satsang. Cherish the company of those who are helpful to your quest, avoid those who distract you. In other words, hold fast to the Good and shun the merely pleasurable. If you live in this spirit, the help you need will come to you naturally.
Either melt by devotion the sense of separateness, or burn it by Knowledge - for what is it that melts or burns? Only that which by its nature can be melted or burnt; namely the idea that something other than your Self exists. What will happen then? You come to know your Self.
Whatever image arises in your mind, that you should contemplate; just observe in what shape God will manifest Himself to you. The same form does not suit every person. For some, Rama may be most helpful, for some Siva, for others Parvati, and again for others the formless. He certainly is formless ; but at the same time, watch in what particular form He may appear to you in order to show you the way. Consequently, whichever of His forms comes into your mind, that you should contemplate in all its minute details.