S&W Shield 40, need advice and help.

I'm new to concealed carry and have just purchased my first pistol for that purpose. (I already had the Concealed carry permit.) The Smith and Wesson Shield 40, and now I'm trying to figure out the best carry position as well as a good holster for it. Please give me advice on positions you found good for concealing it, as well as holsters. I'm a 140lb 5'9" Male. I have been considered the small of my back but haven't seen much holsters for it and am unsure of how concealed that would be. Thank you for your help! Also any advice or help for a beginner in this area would be greatly appreciated. via /r/CCW http://ift.tt/297e7Q3