Once you've determined that a career in tech is the right path for you, start thinking about what companies you'd like to work at. You can start your research with these company profile, just be sure to take them with a grain of salt and supplement with plenty of your own research and networking!
Break Into Tech - Profiles of Top Tech Companies (What is it like, What is great about it, What is not great about it, What is the best way to get in)