OK, so I'm doing a bit of work displacement at the moment and AI is interesting

So next up I'm going to subscribe to AI, but while I was looking for the link to do so I came across the
VGP stuff. So I thought I'd register, but... what as, what schedule, (what is the diffrence between the schedules?) ect ect
I've been shooting since January and I am a memeber ofd a
GNAS afilate club. I've got a recurve bow with sights and stuff. So given these facts, can someone give me a 5 in rundown on an idiots guide to AI
VGP. And please be gentle I'm still new to this game
Thanks