Lab practical is the FUN part of Microbiology. You learn to prep slides, do stains (e.g. Gram stain, simple stain, etc.), learn various diagnostic tests to aid you in identifying microorganisms. You'll more than likely have to do an Unknown project of some sort at the end of the semester. Either you will be given samples or you'll have to go swab objects (e.g. public phones, doorknobs, throats, etc.) to identify unknown microorganisms. Lots of fun, especially when you have good dichotomous keys to work from.
In our lab, we had 4 exams plus we had to turn in 5 formal lab reports and do an Unknown project (given 2 samples). Do you have your syllabus yet? If so, take a look at it. It should give you an idea of what you're in for
Best of luck to you!