Computer for Education

WHO I AM: I am a student of Graphic design department the University of Development Alternative (UODA) and the middle child of my family. My father left this earth 10 years ago. we are 2 sister and 1 brother. My younger brother studied in class 10. Besides my study i work i mean i do freelancing. Sometimes i get some work and sometimes don't get any work cause i don't have my own computer. when i get some work i do it on my University LAB it's very difficult for me to continue my study in this way. My mother take our responsibility after my father dead but nowadays she is very ill. she can't afford this.

WHAT I NEED: I need a very updated computer cause Graphic is computer based subject and not only study i also need this for my work cause i want to do something and want to take my family responsibilities. My university don't allow me in their Computer Lab for a long time practice and work. Only for a computer i could not continue my study properly. Cause my mother can't afford this. Please Please Please help..

I want to continue my study and want to do something for my family.

i attach Some of my work: