There are sample tests on the Placement Testing website.
Depending on your Math and English knowledge, you may not have to study hard to get past the Quant and Lit "A" level requirements. Most students test out of those, and you probably want to, so you don't use up hours on meeting those requirements.
For Foreign Languages, the Placement Tests have increased importance, because the higher your placement, the greater number of retro credits you receive when you take the course recommended, and do well. You could end up with 9 or 12 credit hours based on your placement.
I'm probably not being clear enough hear, so I encourage you to carefully do the research of the website to understand the Foreign Language testing.