First thing is have fun in the training class!
A quick break down of what I have read and seen in videos is the 1pt. is generally best for close quarters work and being able to easily switch the shoulder to shoot from. The 2pt. works better when you need your hands free to do other tasks and I think is more stable.
As you can tell I have very little experience with slings but when I decided to buy one I got the Magpul MS4 sling that allows for a quick change from 2 pt. to 1 pt. I will say that the little I have messed with it I like the 2 pt. better for most functions.
A quick break down of what I have read and seen in videos is the 1pt. is generally best for close quarters work and being able to easily switch the shoulder to shoot from. The 2pt. works better when you need your hands free to do other tasks and I think is more stable.
As you can tell I have very little experience with slings but when I decided to buy one I got the Magpul MS4 sling that allows for a quick change from 2 pt. to 1 pt. I will say that the little I have messed with it I like the 2 pt. better for most functions.