should i machine wash on cold or hot? do i wash with any other clothes? and i assume i wouldnt put into the dryer right?
If you've only done a couple of warm soaks on these, I would definitely wash them cold, because washing them hot could still cause a significant amount of shrinkage. I would definitely also hang dry them, as the tumble dryer will cause significant shrinkage as well, plus it will change the feel of the denim and make it softer.
Most people recommend washing the jeans by themselves. I've washed with other dark clothes before with no ill effects either.