This backstrap loom is an example of huipil fabric, woven by Quiche speaking Mayan people, in Nahaula Guatemala. Backstrap looms are often fastened to a tree or post. The other end of the loom wraps around the weaver’s waist and the weaver adjusts the tension by leaning back on the loom.

http://plato.ess.tntech.edu/cventura/backstraploom.htm
Backstrap Loom of Jacaltenango, Guatemala
This site gives a good explanation of how to weave on a backstrap loom.

http://www.slip.net/~alleyoop/jamesplace/indonesia/fabric/bakstrap/index.html
Weaving with a Backstrap Loom

Here are some great pictures of backstrap weaving in Indonesia.

https://www.mexiculture.com/tours/weavers.htm
Weaving Workshops & Tours
If you are planning to travel to Mexico, you can take a weaving workshop to learn traditional Mayan backstrap weaving.

Backstrap Loom

Weaving Looms
Chinese Foot loom
Warp weighted loom
Ground loom
Vertical beam loom

Rigid Heddle Weaving Books
The Weaver’s Idea Book: Creative Cloth on a Rigid Heddle Loom
Handwoven Home: Weaving Techniques, Tips, and Projects for the Rigid-Heddle Loom
Color & Texture for the Rigid Heddle Loom: A Study in Yarn Selection for Weavers
Weaving Made Easy Revised and Updated: 17 Projects Using a Rigid-Heddle Loom
Weave•Knit•Wear: Simply Fabulous Clothing and Accessories for Rigid Heddle (and Other) Weavers