Homebrew PCBs

I'm new at this and I may be doing it all wrong.  I have my PCB software
generate the layout as a PDF file so I can print it out on my laser printer.
Is there a better format that I should be using for the printout?  Also, the
top layer, bottom layer, silkscreen, and other things all come out as
separate files.  I would like to be able to combine them all on a single
sheet of photo paper for printout.  Does anyone know of a piece of software
that will let me combine the files together into a single file for printout?
My boards are small enough that all these different things will fit on a
single 8 1/2" x 11" sheet of photo paper and it would be nice to not have to
print out several sheets for just one small board.  Or am I just going about
this the wrong way in the first place?
Some help from the more experienced players would be greatly appreciated.
Thank you.
Mark