Hello.
I have a all metal sturdy 3d printer. It uses the replicator rev E board. I have the rep 7.5 firmware on it. Everything works like it should. I think.
OK......
I need to setup all the params. I have the steps per mm setup.. I need to know how to do the home position. offsets. stuff like that. I looked for videos, but i can not find any.
i use replicatorG and makerbot desktop.
My mech setup.
Extruder goes up and down only. Bed moves xy.
All endstops are for max.

1. Im assuming that when the bed moves left. Im going +y. and when the bed moves towards me. Im going +x.Ext goes up +z.
2. bed is towards front, and to the left. im at +x+y max.
3. Home position is x=0 y=0 z=0.

Let me know if i am wrong on any of these
The picture is what it looks like from the top.

.....3dprinter.jpg