What do you need help with ? You login at /administrator and change the settings, add content and install new bits as you need.
Just familiarize yourself with the control panel. You can perform basic actions such as enabling/disabling modules, publishing articles or even changing templates. It's easy and you can get going with it in no time at all.
you could read & write in the joomla forums as there are 20 million people on their at one time... ask a question you get an answer in 5 mins... You could try reading the user guide for starters...