text: what i do after  pass12 in biology  (67.54%) from rajasthn board i am poor & must sure a early earning course.   you can study life sciences, biotechnology or bio informatics. there are degree courses plus post grdaute courses. since you say you want to start earning early i suggest you study b sc part time , evening college if you have the facility in rajasthan and work someplace preferable computer work part time. after 3 years you can specialise and get good job. but if you want to be highly employable make sure your english language skills are good. the net will help you in that.