It may sound cliche but I would suggest you to start with C language. The reason I still suggesting you to go for C because it will step up your fundaments of programming as for being a good programmer your fundamentals must be strong. If you learn C, I can guarantee you that all other languages will be a cake walk. But don't get too much attached with C even if you fall in love with it, just go through all the fundamental concepts, and move on to some other language like python, javascript, PHP which will be more useful to you in a day to day life. If you want to go for embedded programming (ones that are used to program microcontrollers you still need embedded C for that) then you will require C though. C is the mother of all modern computer language.

Important language to learn - Python and Javascript.