workout frequency

Unfortunately there's no cut and dry answer to how much you should workout.  It's pretty acceptable to workout every 48 hours but there's still some lingering soreness that will be in your joints even after 72 hours
rest.
I like working out three days a week.   That way I can mix up how much rest I take. I might do two workouts in a row with 48 hours of rest in between and then take a full 72 hour rest until my third and last workout at the end of the week.
Bear in mind though, you won't see many gains after 72 hours rest. You might even lose strength but taking just 48 hours rest is very taxing on the central nervous system and joints. You may even feel a little frazzled and haywired so you just may need that 72 hours rest to fully recover.
As a general rule of thumb, anywhere between 48 and 60 hours is enough rest. Although as you approach the 60 hour mark, your chance of making a gain is almost hit or miss. Sometimes I make gains at the 60 hour mark.  Sometimes strength is lost.
It's all very personal how much rest you need. That's why you keep a journal so you can track when you make strength gains and when you don't.