Learn C++, Java or C# and get yourself a job at a big corporate.
But hey, if you want to be a hipster coder and dick about all day doing "groovy" websites at some here today gone tommorow startup and earning fuck all by all means go down the web development route along with every other 14 year old school kid.
Erlang? Nice language but too niche. Never really got momentum outside telecoms and its probably too late for it now.