Thanks for the reply.
I'm sorry to be asking questions that may seen obvious, but I'm not quite grasping everything that is being said, either because I'm just dumb or because there is some kind of language barrier here (english is not my first language).
Most likely it's the language. Don't sweat it. I'll break the reply down here a little more to hopefully keep it clear.
I do understand that I should be using barbells and I do intend to use them in the program, as I'm aware of the weight of the bar+plates.
If I got the idea, what you described is what I'm supposed to do on my first week to find out what will be my loadout. Start with the bar only, do one rep. Add 10 lbs (2 plates of 5lbs), do another rep. Repeat until going slower.
No, do a full set of 5 reps. Add weight, full set of five reps. Repeat until you feel yourself going slower.
This weight (let us say, 30lbs) is gonna be my beginning weight from now on (Monday). I should repeat that to all exercises I'm doing for the first time.
Ok, this is why I was going on about barbell vs Dumbbells. The bar alone is 45 lbs. When you say "30 lbs is my beginning weight" it sounds like you are talking about Dumbbells... Because a barbell is 45 lbs plus whatever weight you loaded on.
In the scenario you describe above, where you are using a bar with 30lbs loaded on, the weight you are lifting is 75 lbs (a 45 lb bar plus 30 lbs in plates). THAT is your starting weight.
So if we are talking about Squat, on wednesday I'll be doing the same exercise with 40lbs. On Friday, 50lbs. And so on until I can't do all sets. When that happen, I should reset the weight 10~20% back.
You add 10 lbs every time, yes. Just don't forget the total weight includes the bar. Always record it that way, always include that when discussing it, always use that when calculating new weights especially when you reset (which is where it will make the most difference).
If you are deadlifting 150 lbs, that's a 45lb bar + 105lbs in plates. The reset is based off the total weight, NOT the weight of the plates which how you have been describing the weight you lift here. The true reset weight would be 10% of 150, not 10% of 105.
I think I got that. Having said that, I still don't know how (or if I should, at all) warmup before each exercise or before the entire routine.
Always warmup. Start with the bar and and do progressively smaller sets up until your working weight.
If you are scheduled to squat 150lbs, for example, your warmups might look something like this:
45 lbs (just the bar), 5 reps
60 lbs, 5 reps
90 lbs, 3 reps
120 lbs, 2 reps
Then do your work sets of 150, 3 sets of 5.
Moreso, on my last set of squat, should I keep going until 'fatigue' (AMRAP) or stick to 5 repetitions no matter what? Like 5 repetitions (set one), 5 repetitions (set two), 5 repetitions (set three) or 5, 5, X (as many as I can)?
Again, sorry for the dumb questions, but I'm trying not to kill myself here
BTW, that's the program I'm talking about:
You do what your chosen program says to do. If it says 3 sets of 5, you do 3 sets of 5. If last set is an AMRAP set it will say so. Some programs will use a + after the rep requirement to note that. So no, the program you are running does not call for a AMRAP set.
