Low slope roof (2:12) - acceptable for metal roofing?
It depends on the product. Some are rated down to that low a slope, and some aren't. I've seen 3:12 specified as the minimum for many, but there are some that allow 2:12. Make sure you choose one of those. As for installation, just follow the instructions. Don't try to get creative. The people who design these products are very explicit about how they are supposed to be installed. Screwing down through-fastened panels is the easy part; pay close attention to the trim.