I just wanted to say welcome and that is a nice looking bike! I love the accent colours with the white. After you ride it a few times you will probably gain some confidence and start to relax. And before you know it you will be having a lot of fun riding! I don't know much about various locks except you should use one. My son's bike got stolen at university the one day he didn't lock it up and it was just a cheap Walmart road bike. But he still misses having it since he can't afford to replace it.
Lucy 2012 Surly Cross Check
Sally 2009 Specialized Dolce Elite
Peppermint Patty 2009 Trek 4500 WSD
Marcie 2008 Giant Sedona
Violet 1994 Norco Kokanee