What is xml?

It is bothering me. I need to make layouts for my blogs. I need to make clean ones. Years ago i knew how to make html sites to make blogger templates and also learned to make wordpress themes. But being away from the blogging world for so long, i think I have to relearn and learn new things. When i got back, blogger is using this xml already, and my layouts have to be widget-ready. This is not neat. But still challenges me. I still have no work and I still do have time. But right now, my brother shares my laptop with me, because he learned how to play an mmorpg. This is quite frustrating.

Right now, i am searching for xml tutorials, e-books anyone? or suggestions? I need to learn that. I'm still on the search. I also wanted to have my own domain but doesn't have enough money, i really don't have because i don't have work yet. I just started to look for legit online jobs: GPT's and they realy give me headaches. Get paid to click, surf, read, display ads, discuss, etc. I am not really going to stay in all of those, i'm just trying some. Arghh, all of these stuff are tiring. But i'm still happy that i'm alive. Thank God.