a little help

[soilstream]

hi i am new to the forums, and have a few questions i hope you all can answer.

i live in an airstream, no idea how old but its at least from the 70's( how would i find out which model i have). i have been living in it all summer and now the winter is ahead of me.

i would like to know how to check and make sure a few things work, or even how they work before it gets too cold to work on them/fix them.

- bathroom.....how do i make sure the toilet works? where does it go? how often do i need to clean it and how?

- is it safe to cook inside with a propane camping stove? not too sure if the original stove still works or if it is even safe to use. any risks or things i need to consider before doing so. in the summer i cooked outside, cant do that when its raining and cold. i would like to cook inside if possible.

-electrical- right now the only thing that works are the wall plugs, none of the wall lights come on, no fridge, no heater( if it has one), etc.... what should i check to make sure these function at all.

i have a few more i cant think of at the moment, thanks for your help.