Login/logout testcase

Hello,

I'm new to soapUI and after reading some documentation and check some tutorials on youtube not being able to do something. I wanna do a login test to a website, what I mean is I wanna check out if with some credentials I can acess the site and then verify if login was succeeded or not. 

If that was not clear, please let me know. Really would like some help.

Thank you in advance.