Starting partner relationships can be tricky > there is no direct "how to" guide.
The bottom line is trust > at both ends > without this the relationship is doom.
For me > I will do all work upfront and at my expense provided one of three things occur:
1. the partner puts up sweat equity of similar value, or
2. I receive a greater return over the life of the relationship, since taking the risk burden of the relationship in advance, or
3. be compensated at "cost" plus "time" > so the partnership can start on equal terms with no residual partner-building work being outstanding.
This doesn't help alot > but regardless of who works, who doesn't etc., if not entering the partnership as equals > one or the other will always feel "shafted" and if so the relationship is doom to fail.