1. Not sure the workflow you are looking for but if you are wanting to take existing parcels that reside within the fabric and turn them into lots/subdivisions you can select them all and do a Construct From Parent and just change the Template type from Tax Parcel to Lot and do any manual editing of any of the existing lines, then just build and keep current. However, if you have all this data maintained across multiple fabrics you can save sets of parcels out as XML files and then append them in a new fabric. I guess I would need a little more info of your current data state. (Also, the tutorial data isn't multiple fabrics. All those lots, tax, and subdivision parcels are all maintained in the same fabric)
2. Labels can be turned on and off on a layer by layer basis.
3. Maybe with this one something is screwed up in the template settings. Can I get some more info with this? Are you saying every time you start a new parcel /construction it is set to 3 Connection? Is there a template set to the line? etc.