From Moredesignplease:
Use that funky old shirt sitting on the bottom of your drawer and re-work it back into your life!
It’s super easy to do! All you’ll need is an old cotton t-shirt, some sewing pins and thread, scissors- and you’re halfway there!
Cut off the sleeves and neck line t create your handles.
Pin and sew the bottom portion up.
Now you can shop in style and help the earth!
Do It And How 
I love this… I am about to do this now…
If only I knew how to sew!
several links for “sewing 101” http://thediydreamer.com/sewing/sewing-101-guide-for-beginners-like-me/ and http://www.raechelmyers.com/sewing-101/ and then… http://www.designsponge.com/category/sewing-101 and google sewing 101 Joanne’s and sewing 101 youtube.