Tell me about the history of Pesach

I live alone in a neighborhood with no Jews and no temple within walking distance. However, I would like to start practicing shabbat as much as possible. This presents small difficulties though. For instance, do I need two loaves of challah bread when the other will most likely be wasted? Or since one of the prescribed activities is socializing with your family and friends, is it acceptable for me to have phone calls with them or would that be melacha? Basically, my question is: is it possible or advisable to celebrate shabbat by yourself?

If I do not believe in heaven is that against judaism?

I have heard that in general, tzedakah should be given to help those in need. I often give money to humane societies and environmental protection services as well as to those in need, but have been criticized for my 'non-personable' givings. My justification is that everything is Hashem's creatures, and just because a dog or water is not a person, these resources have value and need to be 'saved' as well. To further defend my argument, resources, such as trees and water, allow humans to survive--without these resources people could not survive. Thus, by giving to such charities, you are indirectly helping to all who are in need of such resources. People still tell me that this is 'not as good' as directly giving to someone in need. Why is there a rating system? Isn't giving just giving? I like to think that Tikun Olam means repairing the whole world and everything in it; not just Jews and those who are poor.

i was wondering, whats the torahs point of view on tampons and pads? also does the torah recomend one more then the other?