My suggestion is honestly to not think too hard about things like "ramping up". Yes it is important to start light and warm up the muscles before you use your heaviest weight, but whether you keep the reps the same, or pyramid them, or use percentages, or do straight sets... I don't believe these things matter at all.
What matters is that you're using the heaviest weight you can handle for 8-12 non-stop repetitions, and adding weight to the bar whenever you can (staying inside your rep range). I personally start with about half of whatever my intended "working weight" is going to be and get 15-20 repetitions, and just add weight and decrease reps over the course of however many sets it takes to warm up (2-3 for small stuff, 3-5 sets for bigger lifts), then I go to failure with a heavy weight for 8-12 reps (warmup sets all just near-failure). After that, if I feel like it, I might go heavier and try to get 4-6 reps for a set or two, but it's not something I do all the time. Just for fun.
Some guys warmup and then do "straight sets", DylanJ from this website would be an example of that off the top of my head, but most bodybuilders do not. If you're working as hard as you can with a heavy weight, you simply aren't likely to stay inside your ideal rep range for a second or third set. My advice, if you want to do multiple sets to failure on an exercise, is to adjust the weight on the bar to match the rep range you want to be in. Using the same weight for multiple sets always seemed kind of futile to me... but as I said, it works for some.
You have a good head on your shoulders and it seems like you will figure out the little things with time, just keep the bigger picture in mind. Adding 50, 100, 200lbs to your bench, squat, curl, bb row, etc. is going to yield greater results than anything else. Programs, supplements, specific set/rep schemes, quirky exercises, these things are all secondary to progressive overload on the basic bodybuilding exercises (ALL of the basics, not just a handful).
Things you do along the way like using stretching exercises, training with a full range-of-motion, not neglecting areas like lower lats or calves, yes these will have an impact. But the BIG PICTURE is what you shouldn't lose sight of (gaining weight and getting stronger).