How-to work with Training zones

How do I create new training zones?
How do I edit training zones?
How do I delete training zones?
How do I fine-tune the upper and under limit of the training zones?
How do I create new training zones with the training intensity calculator?
How do I create new training zones based on a lactate test?
How do I create new training zones based on power device data?
How do I create new running training zones based on speed or GPS device data?
How do I create new training zones based on a critical swim speed test?