READ ALL NOTES AND FOLLOW THE GUIDELINE.

When you see 5+, 3+, or 1+, that means you do the max reps you can manage with that weight, with the goal of setting a rep record in each workout. Yet with good form. Don't let the ego do the lifting, you will get hurt.

Week 1 workout for narrow grip bench press:
Using the example above, if your 1RM is 100kg, you calculate all your percentages from 90% of that max, or 90kg.

So you're using
58.5kg (65% of 90) x 5
67.5kg x 5
76.5kg x 5 or more unbroken set.

Take a video of the last set and put it in the google drive.

Set 1 65% x 5
Set 2 75% x 5
Set 3 85% x 5+

Rest 90s. to 2 min.