Build a computer, or a simple web server as people have said. Get used to a new operating system like linux which can be a bit daunting at first but it gets easier. If you are looking down the code route start with web languages IE HTML CSS and PHP. Maybe download PHPBB see if you can mod it a bit, everyone has done a bit of phpbb modding even if they do not like to admit it. Then I would move onto assembly language, python, ruby. Once you have conquered all of them try your hand at C and C++.
I went through all of these stages but found that my heart really lay with hardware so basically just go with whateve you fancy, don't do something if you are not enjoying it.