Not a pro, but I'd say, forget all about IWB holsters unless you want to be uncomfortable and buy new pants and belts in different sizes. Go with a paddle, belt-slide (OWBs), or fanny pack - you have to wear a covering garment anyway, so why not be comfortable? Don't ever whip it out in public, even if in a gun-friendly crowd, if the law in your state says must be concealed at all times - never know when someone will rat you out, so to speak. Check to make sure your mag release is not being accidentally pushed (if carrying a semi-auto) - had that happen several times, where mag is just floatin around disengaged. Make sure gun is tightly held in the holster, so that if you have to jog or get jostled, it won't fall out. If you're not sure, then get a holster with retention thumb-strap. If carrying in a fanny pack, get a BLACK gun - because if you go to dig around for your wallet to pay for something at the checkout stand of the grocery store, a black gun won't be noticed; a shiny one will. Also, put your wallet in FRONT of the gun BEFORE you enter the store, so that it's easy to whip out the front of the fanny pack while laying the top back down immediately to cover the gun, when paying at checkout. If carrying hip/strongside, carry at 4:00 or 4:30 position, not straight 3 o'clock, so that if the wind blows open your covering garment, you still won't be "made". Don't back up into the back wall of an elevator full of people, or the loud "clunk" sound when the grip of your handgun hits the back wall will draw some strange stares. Don't hug any one of your relatives who are anti-gun and liable to cause a scene when the feel your hog (the gun I mean). Single stacks are much more comfortable to drive with when carrying in said 4 o'clock position. If driving on long trips, use a shoulder rig instead. Oh yeah, and a .22 on you is better than a .45 at home - so carry!