A weekly overhead press routine largely depends on whether you are focusing on improving the overhead press as a primary exercise, or if it is a secondary/adjunct movemement, such as in a powerlifting routine.
I have never liked to state “X” number of workouts per week, because recovery times vary from week to week as dicated by your schedule (especially as you get older and have more responsibilities)but as a general rule, doing 3 overhead pressing workouts in a 12-15 day period works very well-here is an example
Day 1, Wkt 1 Overhead Press 3x10, total tonnage
Day 6, Wkt 2 Overhead Press, 3x5, 80 degree incline, 1x5, 1x3
Day 12 Wkt 3 Overhead Press, 3x3, Power Rack Partials,
Day 16, Start Over
Now, this would be done along with the rest of your routine, however you set up your workouts-I prefer Full Body, Push-Pull, but that is just a personal preference.
Total Tonnage Explanation
3x10, warm-up, then select a weight that you can do for an all out set of ten, lets say its 140x10, after a couple of minutes rest, you figure out how much you can leave on the bar and still get ten reps with, in most cases it will be less tahan 140, so lets say 130, you get ten hard reps, third set, keep as much weight on the bar and get ten more reps, it might be 125, so you add your weight as follows:
140x10 1400
130x10 1300
125x10 1250
total tonnage 3950
the next time you do 3x10, which will be in about two weeks, you mission is to increase the total tonnage within those 3 sets,
next workout, 3x5
next 3x3
then start over and always work on improving the tonnage
Hope that helps and is not too confusing
Keith W.