So i want to make characters in zbrush so where does one start. 
you need to learn the basic interface first. DigitalTutors has some great videos, but if you donāt have access to them, there are good ones on youtube. CannedMushrooms has a youtube channels with a lot of good tutorials on it.
Good Luck 
yep, what goast said 
In the end, watch as many tutorials you can. I watch tutorials I donāt think Iāll need, because I occasionally pick up a new way of doing things. Can never learn too much 
That was help full watch all the videoās and i was saying ādam thats coolā :lol: