need detailed instructions on how to build a tipi?

"The Sioux and Cheyennes used a three-pole tripod foundation, with one pole being placed so as to support the right side of the door, thus projecting slightly lower than the others at the rear. The other poles were then piled around this foundation. The Crows used a four-pole foundation, the apex of which could be easily noted below the apex of the remainder of the poles."

It requires 22 square yards of 6 or 8-ounce duck, heavy unbleached muslin, or Canton flannel (the wider the better, as that saves labor in making up), 100 feet of 3/16 inch clothesline, string for sewing rope ends, etc.

I would recommend one of the pop up tents made with synthetic material. You can probably pick one up at Goodwill or something equivalent for not much.

If you are homeless, from where are you accessing this computer?

go to http://www.wikihow.com/

It should have something about how to make a tepee

If not, google "How to make a tepee"