What have you been doing so far? The 10x3 was designed for all those guys that have been doing 3x10 for so long it’s a big change. The idea is that if you keep doing the same thing over and over you wil go stale so you need a big change to start new growth. It may not be appropriate for you. It’s the change factor that’s important here.
A beginner should do something like 3x5 as in Starting Strength. Waterbury was writing to more advanced lifters who could benifit from a change. 10x3 is too much high intensity volume for a beginner. You need more frequency.