I have a Brother xl 3510 sewing machine and it came with a bunch of feet. Being new I only know what the walking foot and the normal sewing foot is. Could you please tell me what these are used for?

The first one looks like a darning/free motion quilt foot. It should have these feet:
•Buttonhole Foot
•Zipper Foot
•Button Sewing Foot
•Rolled Hem Foot
•Blind Stitch Foot
Doesn't the book show the feet?

Darning foot, a guide of some sort and the last one looks like a cording foot.

the one on the left is called a darning foot or sometimes a quilting or free motion foot. It is used in doing the final quilting stitches on quilts when your feed dogs are down and you move the fabric sandwich around under the needle.

The middle on is a gauge that fits into the walking foot if you want to stitch parallel lines in, the gauge adjusts so the bottom of the arm tracks along a previous stitching line and the needle will stitch a parallel line. The straight,even bar on this foot is the one that fits into the walking foot.

It's hard to tell what the right foot is, but it appears to be a blind hem foot that allows you to set the depth of the stitching for a blind hem (I'm really not sure about this one.)

The guide (middle of picture) probably fits into the walking foot so you can sew lines at an even distance apart.

It does look like a blind hem foot, I looked it up. :)

Do you have a manual for your machine. It will describe in detail what the feet are used for. If you don't have a manual you can probably download one.

I looked in the manual but it didn't really say what foot was what and it had other feet that I don't have as well, so I got kinda confused.