I started out by weaving one row on one band, putting it's shuttle down, then picking up the second shuttle and weaving one row on the other band.
Sounds slow and clunky, doesn't it? Well, you're right.
The most efficient way to weave 2 bands at once is to weave as far as you can on one band, then set that shuttle aside, and weave away on the second band.
Oh... speaking of shuttles, here's the tracing of my most favorite inkle shuttle:
Here's the video that shows the weaving process:
Support the spring as you gently ooze the warp rod around and up the back of the loom.
Pat the warp strands back into the channel, and tighten up the tension again.
Remember, you do not need to have the tension as tight as when you are weaving a tapestry or beading.
You'll find the perfect tension that suits you best.
Keep on weaving until the warp rod is sitting on top of the loom, and then check into the 4 th video in the series:
How to finish the bands.