Many thanks for your kind words re: the ebook
Re: your questions:
In my own experience, many of the issues you raise are dependant on a number of factors... so there are no real hard and fast rules. Things like machine rigidity, tool sharpness, spindle power, materials, finish quality and so forth will all effect machining capability and work settings. You should be able to get some useful guidance from the machine supplier.. they should have tested the machine.. or at least the machine design.
Before starting any serious work, it's best to perform some test cuts, to arrive at SAFE parameters that are well within the capabilities of your machine. As a rough guide you should generally be able to cut to a depth 50% of the tool diameter, at a reasonable feedrate without putting a strain on your machine... check the cut as it proceeds.... look out for things like lost steps.. burn on the tool or materials... watch the machine.. does it move smoothly .. what does it sound like... assess cut accuracy and finish.... adjust your applied parameters based on the results..... If all seems well, go on to trying deeper cuts, faster feedrate etc.
Different tools, materials and cut setups will require different parameters. The only way you can arrive at what works best for your own particular circumstances is on the basis of testing..
Hope this helps