Many of the exercises in this training plan don’t have a rep range to shoot for. Because of the nature of at home training and the lack of equipment, rep ranges will vary depending on the equipment available. Using reps in reserve (RIR) is the best way to circumvent this issue. Instead of shooting for a rep range, you will aim for a certain number of reps shy of failure.This will ensure the stimulus from training is enough. For example 2 RIR means that if your max reps for an exercise was 10 reps and not 11, 2 reps in reserve would be 8 reps.
Everything is scalable. If you are unable to do a movement, scale it back. You can google the name of the movement followed by “scaled” and you’ll find a number of different alternatives.
Use whatever weights you have available to you. Any weight listed here is just the recommended weight. Use the weight that challenges you.