#1
I'm trying to learn this part of Free Bird, but I can't seem to finger it right. Most people suggest using the pinky to hit the 18 e note, while using your ring finger for bending the 18 B note, yet for the life of me, I can not fit my finger behind my ring finger! I don't have huge hands either, so I don't know how you all do it. Any advice?

---------18-----18-----18----18-------15----|
--18b18b----18b----18b----18b---18b------15-|
-----------------------------------15-------|
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--------------------------------------------|
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#2
you could use your index and just slide up to the fifteenth when you get there. theres something called a finger roll, basically wut u do is roll the tip of your finger from the lower string to the higher one and fret with the pad of your finger instead of the tip.
#3
for that part of the song i use my third finger to bend the b string and while bending i lay the same finger on the e string and hit that too!