Hi Hamid, it's great you joined!
If you have any questions regarding the site let me or HC know.
One just has to play a bit to get used to it, check the settings, customize your page, add your twitter account, join and form groups, add photos, create blogs, invite your friends,...
I hope you'll enjoy the experience, find interesting events and people.
I look forward to your posts and events.
Greetings,
Kina