Put the dry ingredients in a large bowl and stir to mix.
Add the water to the dry ingredients and mix so that all the flour is moistened (you'll probably need to use your hands).
Put on floured board or kitchen counter and squeeze/knead a minute or two till it is a little springy.
Pull off enough dough to make a ball about the size of a ping pong ball, or bigger if you want bigger tortillas. Shape into a nice ball.
Roll flat and thin with a rolling pin. As you do this, sprinkle flour on board and dough to keep from sticking.
Place on hot dry griddle or frying pan.
Cook until it starts to brown in spots. It won't take long. It will probably bubble up a little as well.
Flip over and cook the other side.