I typed your thread title into Google, and lo and behold came across the Wireshark site. A couple of clicks later and I find a section called "Wireshark User's Guide".

If you aren't capable of doing that yourself, Wireshark is absolutely not the software for you...

Sorry to sound like an arrogant git, but are you really expecting someone to spoon-feed you instructions for this complex piece of software which minutes ago you didn't even know what it was?