Some possible job titles might be (depending on your training): Network Engineer, Network Administrator, Systems Analyst, A+ PC Technician, DBA, Database Administrator, Programmer, Developer..plus a whole lot more.
The first thing you should ask yourself is if you like computers. If you really are interested in them, there are some very well-paying sectors of the computer industry, but it takes time to get to the appropriate level. A senior IT security analyst will make big money - but they started off low man on the totem pole - and generally are very well rounded, multi-vendor certified, skilled IT professionals. They don't view themselves as simply certified IT workers. They built their career over time, have earned the respect of their peers, and are known as the "go to" people in their organization when a computer issue arises.
Most people get computer training because they need to obtain a specific skill. And after trying to teach themselves they realize that having somebody instruct them is a much better option, as computer skills aren't always as intuitive as you'd like to believe. But there are additional reasons why you should take computer training classes. If you are thinking about a new career, computer skills are a necessity. And if you are already an IT professional, sitting through advanced computer courses and obtaining the latest technical skills generally makes you more valuable to the company you work for - increasing job security, and at times, salary.