Edit:Net Classes, select a minimum width for traces.
Signals, at least 10mil. Clearance 10mil. Drill, 12 mil.
Power, at least 20mil. Clearance 10mil,. Drill 24 mil. If high current is expected, then 32 or even 40 mil.
Can't tell what the parts are - add a 0.1uC cap to the Vcc pin of each powered device to Gnd.
Once done with that, select File:Switch to Board for the board view to layout your components.