Anyone...please help!!!

As I have been honestly telling every now and then...that I don't understand fully well to be functionally knowlegeable in using those home keys and everything computer-wise, I want to know how to do and make back ups for my weblogs. I want to make sure that I have all those detailed journals that I make which is consigned for posterity reason. One friend blogger, veradik have had her first shock when she learned that her blog collapsed without any prior notice. Biglang di na niya mapasok. Ay naku sayang...lalo na ang pagod but importantly I want to make sure that this will stay forever and I hate to think losing one much more all of my journals...touch wood!