How to get an us visa? and help me to get us visa..?

First you must apply to and be accepted at a US university. Once you are accepted to apply to the US government for a student visa. It is not difficult to get one but you must be able to prove that you have enough money for one year of studies. You can only work at part time jobs at the college or internships within your major which you cannot get until you come here. Basically there is no financial aid available for you so you must have some way to pay for your education.