I nursed #1 till 15 mos and #2 till her 2nd bday. I might differ from some of the ladies on here, but here's my take:
1: Nipple piercings; haven't a clue. Too much of a wuss to even think about piercing my nips! Love the term 'Lady lumps", tho!!
2: Usually BFing helps you lose the weight from baby. The initial chunk drops off and then it's a slow and steady. I did find that the last 7-10 pounds hung on till after I weaned. Small price to pay. Be forewarned though, if you're anything like me, you'll be flippin' starving and crazy thirsty in the beginning especially. The best thing you can do is eat well. Eat at hunger, but do it wisely. BFing is more of a caloric drain on your body than pregnancy.
3: I see a lot of women on this forum post about how BFing is really hard in the beginning and painful. I NEVER had pain with either of mine. What I learned from lactation classes and consultants and books is that contrary to popular thought, there is no period that your nipples have to "toughen up". They secrete oils and antibacterial materials that take really good care of them for their purpose. The only time I ever had any pain was with thrush. If you latch on and it is the least bit uncomfortable immediately break the latch, re-adjust and start again. Take a deep breath in there, too. BFing is an art. Think of it as a beautiful, incredibly synchronized waltz between mom and babe. It should never hurt unless someone's toes get stepped on. Carrying on a feeding session when the latch is bad or position is awkward is what causes the ugly cascade of pain and trouble nursing!!
As an aside. There are at times moments of discomfort when baby is trying to nurse on a dry breast. This usually happens during periods of cluster feeding when baby is going through a growth spurt and in the process of increasing your supply. Have patience, one or two feedings and your supply will increase.
Position and hold are entirely personal. Do what makes you feel good!!