It's about midle of the road in hardness, some exotics are hard to stainless like stainless is to alum. There's also different grades/hardness' of stainless. As well as some "free machining" stainless.
For turning, mostly coated carbide inserts. Most water based coolants will work. Tapping may require tapping oil on smaller holes.
It's a little intimidating at first, but when you've ran it a while it's actually nice to machine.