You can use twisties but I would not and don't.
Plenty of threads on lovers and haters regarding this.
Any brown long neck bottle should do the trick.
I got most of mine when I first started from a restaurant.
Hit up your favorite townie bar...many of them won't be reluctant to sell you a case of empties for the deposit.
You can also hit up your local redemption place...bring a six of your best and you might even get them for nothing.
You might be a bit skeeved about using bottles from folks you don't know and don't be suprise if you find cig butts, etc....don't worry, a nice hot bath in soap and water with a bottle brush and then a dunk in sanitizer will do the trick...glass is really very sanitary and won't harbor too much that will kill you!