hello my name is alia and i am new here

i love to cook and recently moved to the sangre de christo mountains
in new mexico. i never baked much before for lack of space, but here
i find i am cooking a lot more, and baking as well.
however, i am at around 7000 feet here, and my cakes are Falling In!
does anyone have any suggestions as to how to compensate for this? i
understand there is a way, but i dont know how to do it.

thanks!
alia