Personally, I would say PHP but thats just me
Seriously, what is your goal? Just "become a coder" is not really a good start. You need some thing you want to accomplish first. Or as coders call it "an itch to scratch". Once you know your itch, you can find the ways to scratch it.
For web stuff PHP is a very good idea, since it is so wide spread, there is thousands of scripts you can look at to learn at and even more tutorials and forums for help. It is rather simple, but also has complex parts you can make with it. IMHO a good language to learn.
After that, coding is more a sort of "dialect" thing. When you understand coding in general and you want to use a language like C++ or Java, then all you need to do is learn it's particular ways of dealing with things. The core of it, functions, variables or higher stuff like classes and so on, always stay the same in principle.
If you got questions just ask me. Currently I mostly do stuff in PHP, together with some databases (which is it's own thing), but I have experience with a wide range of languages.