My first session was this afternoon and I used the app's guidance in starting with an empty bar (except deadlift) and working my way up in 10lb jumps with good form until the speed of the bar slows. For the deadlift I was tempted to go heavier, but it was in fact the first set where the bar slowed at all so I'm starting there.
Here are my day one work set numbers, given as (weight)x(reps)x(sets):
Squat: 115x5x3
Press: 65x5x3
Deadlift: 155x5x1