I'm just starting LTS of food, and know nothing about it.

First, I see a lot of references to mylar bags and oxygen absorbers. Could dried foods (rice, pasta, beans, etc) be left in their original packaging and simply placed in a pantry (cool, dry place)? How long would this store?

Any risk of mice or bugs? If so, could the original packages then be placed in a 5 gal bucket? What would be the expected shelf life in this case?

I understand the next step up is to vacuum-seal it, but right now money is a big concern and I don't feel comfortable buying lots of equipment and supplies. Are small quantities of mylar bags and oxy abs available? If so, where can I find them? Does anyone know of places in the North Texas area to purchase these?

Any comments on Food Saver vacuum sealing versus Mylar?

Finally, any suggestions on links to tutorials (written or video) would be appreciated.

Thank you very much!