Up to ​KiCAD Notes

Starting a new layout in KiCAD 5:

Board Setup

Select the "in" icon at the top left to switch the units to inches.

Click the "Board Setup" Icon under the word "Edit" in Pcbnew

1. Start with Layers. Set the number of copper layers (usually 2 or 4)

2. Select Design Rules and fill in as below

3. Select Layers->Text & Graphics.

Set it something like the example below:

4. Select Design Rules->Net Classes

5. Select Design Rules->Tracks & Vias

This depends a bit on the design, but the selection below is a good start.