I'm studying with Tae Kim and it says that you can use a verb in te-form + 行く、来る to show that an action is oriented toward or from someplace.
In one example it says:
Studied Japanese from way back before and eventually quit.
And my question is why the 来る verb is conjugated to the te-form きて. I thought that only the verb that is before has to be in te-form. And what would be the meaning if I conjugate 来る in past: