Homebrew PCBs

Those of you who have used photresist films would you care to comment?  I noticed different application methods, self adhesive and laminate.  I assume that in either case, I apply to board, use a uv light through a positive or negative film above it, and then remove the unexposed film?
Maybe I print via a laser/inkjet onto the film rather than use a second transparency? How about leakage under the film during the etching process?  Is this a concern and does either the self adhesive or the laminate provide better results?  How does this compare with using a liquid photosensitized coating on the board?  How is the unwanted film removed from the board prior to etching?  If the laminating procedure is superior to the self adhesive, can a flat household iron be used to laminate the film to the board?  Any other comments?  Google has provided a list of sources, do you folks have recommends for the USA?  Any preferred how to's? Thanks for your time.