Do you want to go to university? Are you not sure if you're ready? Are there some tests that you need to take in order to qualify for entrance into the program you want?
Here's a web page that deals with preparation for college and university. It provides advice on preparation and also the tests you need to take. For example, if you don't have a high school diploma, then you will need to take the GED test. Similarly, if you are a graduate and you want to go to medical school, you will need to take the MCAT test. This page also helps you to identify colleges and universities that provide courses or programs to assist you in your preparation.