As a start, here's some general steps. Maybe you want to add some tips for a particular section.

Build Turret / Eyelet Board

Install the Hardware including power transformer, output transformer and the choke

Install the turret or eyelet board

Wire the tube heaters - don’t switch the heater wire polarity.

Wire up the main power supply. Starting at the IEC connector

Wire the Rectifier

Connect the Board - make the connections from the turret board to the tubes.

Connect the Board - make the connections from the turret board to the potentiometers.

Wire up the input jacks - Use shielded wire

Wire up the Output Transformer to the Output Jacks.
Double-check the wiring and the components.Trace or highlight the connections on a copy of the layout.

Follow Power Up Sequence testing voltages as you proceed.