Looks pretty good, I've managed to snag Sig Romeo myself for half a price on Black Friday. Don't even have anything to mount it on currently, but that's next in line to figure out.
It feels like there are far less outdoor ranges compared to 10 years ago. A lot more indoor ones those days.
Going there in sneakers is definitely a huge mistake :D
That book Josie recommended was how I've learnt, but you can also just dig this forum and various articles on the web(there are plenty) and learn from those.
Jellis, I've had similar experience, hence why I always have a pair of rubber...