Getting end-buyer under contract before buying....

[Kyle Conrad]

So as a cash investor of vacant land, I have ZERO experience wholesaling. Lately, however,  I've come across quite a few pieces of property that don't have legal egress and are completely bordered by parcels owned by other private owners. These neighboring landowners are often the only real chance to resell these parcels. The catch is that BECAUSE these parcels don't have legal access to a road, etc., the landowners are often willing to let them go for next-to-nothing.

As such, would their be a way to wholesale this deal - to make sure I have a signed contract with the end-buyer before I actually close on the parcel from the current owner? How does this work?