How to make money on computer at home being an computer engineer ? -

hi I m studying b tech 3rd year, i neglected my studies and my percentage is low that i cant attend placements. so i decided to do something and earn money on my computer while attending college. please tell me how to start?|::::|start by networking with others in your field, ask them if you can do side work for them at home etc. IF YOU DONT ASK, YOU WONT KNOW!!!!!!!