Hey there,

I'm assuming that you have already passed 10class so you can start off by doing diploma courses for 3 years a d you could go for degree later on. But if your 12th passed in science whales try for bachelor's degree with has a higher value than diploma. Study has no age limit so you could go for your masters program after your bsc. If that don't sound well you could go for btech. There are all open for you. Engineering courses could pay you more than others and you can choose many different work places there 2 fields are vast and in demand.  So what are you waiting for deside now and do your best.