Yes, I have visited a LaLeche meeting, I like it a lot. But they don't have them around here very often.
It is a lot of work, takes a lot of patience and motivation, but it's sooo worth the trouble.
When my daughter went through her spurt between 4th and 5th month, I made sure to do a bunch of different positions that way the one area (where the top of the baby's mouth is), does not get sore. It's hard to do the football position when the get that big, but laying down, sitting up, and even letting the baby sit on your lap and nurse like that helps (if you do that you'll have to hold the head back if you have a sleepy eater or his nose will be smoshed in your breast...lol).
That's awesome your nursing, you should know what I mean when I say it's a beautiful experience.