To proceed.
To use and adopt (information) in order to understand an issue, make a decision, etc.
To happen (occur).
To continue an action.
To continue in extent.
I think I've said enough now; I'm not sure I should go on.
To talk about a subject frequently or at great length.
Expressing that the speaker can continue speaking without interruption from the listener.
Expressing surprise, disbelief or incredulity.
Expressing encouragement, see come on.