Starting Point for Laying the First 3/4" Solid Oak Hardwood Board
I'd set a course of planks parallel to the wall on the right, tongue pointing left. Screw scrap on the left side of that course to keep it from moving. Rip a spline (tongue substitute) and start a course on the right with the tongue facing right. Nail your way toward to transitions on the right, understanding that you'll face nail the ones near the wall. Now remove the scrap on the left of your starter course. Face nail and shim (to prevent movement) between the wall and your starter course. Nail normally where your nailer will fit. Now, just motor to the left. Rip as necessary at the left wall. Once done, congratulate yourself, have a cold one, and sink into a bathtub with epsom salts.