I didn't read all the responses but the only thing you need (I teach machine quilting) is walking foot, darning foot or free motion foot. Now when you go to get the free motion foot be sure and get the one specific for your machine and look at the various ones the store has. There are different types of free motion feet.
Then instead of gloves you can cut off the tips from rubber gloves like you use in washing dishes. I use "Tacky Fingers" - the stuff they use at the bank to count money. If I have a large quilt I use glycerine like hand lotion. This gives grip all over the hand.
What I'm saying here is that the only two essential items you need other than the sewing machine is walking foot and free motion foot, and something to add grip to your fingers. After you get to some comfort level then you can start adding the other gadgets that folks say are helpful.
Last note about free motion foot. Be sure and look at the various options. I have a Bernina Machine and use the open toe embroidery foot as I can see the needle. There are other types. Try them out and get the one that is comfortable for you.