I used glue to adhere the battery, T-7000 kind from Amazon store. I didn't put it on the glass but rather the outer edge of the battery.

It's easier to pop the button up than it is to reattach it when reassembling the phone. Well, I sure hope it goes better for you than it did me. (:

The 9 screws shown won't let the bracket up unless you finish with the 2 more screws. (near edge and bottom of the bracket).

It took me like 25 minutes to get my battery out. I have a heat gun that was relatively helpful here but prying seemed to work as long as the adhesive was softened.

I used a pointed metal spudger to pop that piece. The picks were more difficult here. There's an arrow that points the spot that needs to be opened.