Concurrent workouts?

I've just started the Fundamentals course and am following it alongside the training I was doing previously - which is mainly bodyweight training (i.e. pushups, situps, burpees, squats) , running, and weights. Is this going to impact the effectiveness of the GST training?

Fundamentals has the purpose to detect mobility deficits and basic locomotion/support movement deficit so for now you can but as you will progress over foundations the your routine must be revisited.

Ok thanks - how should it be revisited and at what point?

When you move to Foundations. This is where you will go from training fundamentals to a focus on establishing basic strength and mobility/joint prep. In the course forums available to Foundations customers we have discussed and explored a lot of workout permutations and combinations

It is certainly possible to train more alongside GST, but there are some methods and guidelines which help to avoid redundancy and promote optimal development

For now you are fine.