Ignore the coffee snobs. Sure there are a million ways to do coffee. Percolators make good coffee and are simple. Plus the pot can double for heating water. I drink coffee like I put gas in my truck, it's hardly a gourmet experience, the most important part about it is the ingestion of caffeine. But I do like it to taste good.
I find the percolator makes better coffee than I'm accustomed to with minimal effort. It took some time adjusting how I did it before I got it where it tasted the best, but it's not rocket science. Not like I had to throw any pots out because it wasn't just so, just made a mental note, hey it needs to be stronger, boil a bit longer next time, or use more grounds. Heck, if it turns out weak I put it back on the heat and perc it a bit more.
I tried a coarser grind in my percolator at first, but found it just made it take longer to get any strength to the coffee. Now I just use regular grind for normal coffee makers, no problems. I take out the filter part and splash some water in it before I pour in the grinds, makes them stick to it and not go down into the coffee. I rarely get any grinds in the coffee cup despite not using any kind of paper filter.
I generally perc it 10 minutes or so, more or less to taste of course. Like the others said get it to boil then turn it down and let it slowly perc, just as long as you see it bubbling up in the clear sight knob that's fine, you don't need it to be really going at it making the lid jump.
I like New England Breakfast blend, but I'm not terribly picky, it's what my work provided for many years and I got used to it and started buying it for home. Now they give us some really cheap sludge I drink anyway. My Dad has always been a Folgers drinker, I can tolerate it but don't really like it that well, it's bitter.
I use this percolator, I was impressed with it, seems to be very good quality stainless.
https://www.amazon.com/Farberware-Classic-Stainless-Yosemite-Percolator/dp/B00005NCWQ