you will be fine man.. more than jobs you need to focus on school right now, but you seem really motivated on that area too.you're a bright kid. i think the most use of green card in this country is while going to school for the 1st undergrad degree. US govt is happy to put you in the dorm of a University , feed you like a pig for free and pay all yuour expenses hoping you will be a productive citizen  in the future. I think this is a huge benefit from a cool govt and everyone should definately utilize it. so make sure you go to your school's financial aid and talk to other Nepalis with green cards to understand what they are doing. you're already in the right track as you know networking is the most to find jobs. keep doing that in real life as well and if you just want to work for few months before school start then you might consider going to ocean city, md or coming to estes park too. it's easier to find jobs and you have a green card as well. once thing i remember while looking for jobs back then is you need to go and continuously show your face to the managers evey day or every other day and show them you're desperate.