1. It will take Composite video, go to Radio shack and get few/many BNC-RCA converters.
2. TBC takes a composite video signal, mostly from VCRs, and syncs it together with other inputs. VT needs TBCs to work properly.
3. You can use DVD recorder.
The first input needs to be stable, like from TBC or Camcorder.
As far as connecting things, the Video Toaster manual shows you how to connect things together.