First of all, a GRAND WELCOME in SAP world ! ! !
Its really a funny thing to receive welcome to newbies from a newbie 
I have joined SCN long back in 2013 but have started participating from past two weeks. That's why I am a newbie who has a long way to go!
Before two weeks SCN was just an engine for me which can give answers to my foolish doubts. But somehow i used to increase my liking towards SCN.
My newly grown interest in SCN can be my new job appointment as Initially i was just an SAP front user but now i have newly appointed as Associate Consultant for MM/SD module.
So, I just want to say all of you NEWBIES that
START PARTICIPATING, GET ENGAGED AND GROW IN SCN !!!
***You can start engaging in SCN by following missions. List of SCN Missions document might b helpful to you. :-)