IT is very challenging. And as listed in the preceeding post there are a large number of positions/position descriptions available. And most of those positions actually can be doing any number of things or even something else. Titles and job descriptions aside - no matter the discipline.
And, you will most likely start out in some support position - one way or another.
Start reading the employment ads and gain an understanding of what skills and skill levels employer's are seeking. Take a look at online job applications, resumes, do practice interviews, learn about job hunting in IT.
Visit a library and start perusing technical magazines, keep reading in forums such as this one, go online and learn about different topics. Start...