I spent a couple of years fooling with pipes, and in typical fashion did a bunch of research on the history and use of these devices..
I would hazard that 80-90% of people who try pipes do not learn to fill, light, and tamp the tobacco properly and they have a very poor experience. Also, they do not maintain the pipe properly and it rapidly becomes crusted with carbon and sour.....
Good briar pipes need to be "rested"; that's why most smokers have a number of them. After a day's use, the pipe should be cleaned and put aside for as much as a week.
Filling the pipe in the traditional manner is by "thirds"; the pipe is filled loosely, then a tamper is used to tamp that down to about 1/3 the volume of the bowl. Repeat till the pipe is full.
The degree of tamping depends on the cut of the tobacco and it's burning characteristics; you need to be able to draw easily.
When lighting, the initial application of flame will cause the tobacco on top of the bowl to expand. You should apply the flame, take a few puffs, then re-tamp the expanded tobacco and apply the flame again.
A well-tamped and lit pipe will burn properly without becoming overly hot. Tamping must continue as the pipe is smoked, as the lower levels of tobacco will expand again as they heat up.
A good "pipe nail" or tamper is a necessary accessory.
Avoid cheap briars of the "Dr. Grabow" variety. They are made of nasty wood with cheap filler forced into the holes and voids. They will be fitted with cheesy "filtering" systems that cause more problems than they are worth.
Expect to pay a fair chunk of change for a quality pipe!