The yarn used within the weave process is important when determining what the purpose of the piece is. When weaving a rug, the yarn needs to be hard wearing, whereas a piece of clothing needs to be soft and adorn the body. The decisions about what you want the products outcome to be need to be made before starting the weaving process.
The weft and warp of weaving requires two yarns, the warp, specifically, must be strong enough not to break during the process. Having two yarns means you can choose different textures etc, this gives room for experimentation within a project. You must take note of the size of heddle, as the yarn can not be thicker than the eye.
Threading the warp through the heddles on the shafts:
To start, you must have a pattern design that determines the precise heddle the yarn fits through, and which shaft it is on. The yarns are situated in an under-over design at the back of the loom, the next piece of yarn will pull away from the rest easily and appear to be on top of the others. Once the yarn is selected, put the tool through the eye of the right heddle and pull the yarn through.
Beginning a pattern:
A pattern should show you the shafts that need to be lifted before doing a line of weft. If the square for that number shaft is blocked out then it must be lifted with the lever on the side. Then the yarn must be paced under the raised warp threads and straightened. Make sure not to pull the weft too tight as it may alter the shape of the weave.
I found weaving much easier than I first imagined, once you understand the main process, it is not difficult to improve on. The patterns are quite difficult to see, due to the use of alternating shafts throughout, but once you see the arrangement, you can get much faster at the process.