To find TDC on #1, which is closest to the radiator, on the right revolution of the crank,
watch the rockers on #6 (six), which is closest to the firewall.

Turn clockwise (viewed from the front) until the exhaust valve on #6 has just closed and the intake has just barely started to open.
Watch the timing pointer at the same time for the marks on the flywheel.
You will now be at TDC on #1, on the right revolution to install the distributor with the rotor pointing to the #1 tower on the distributor cap.

Hope that gets you going! :-)