For Christmas, I made my husband a kit with everything to start stenciling, and included a little instruction book.
stenciling tutorial book (link)
I've never stenciled before, so I used t0xicity and deathcabforcody's craftster tutorials for the content of the book. If you print the second page of the document onto the back of the first page, the little pages of the book line up. Then you cut out the two pieces, and staple the book together at the fold. Here's a picture of the book because that probably didn't make sense...
I wrapped the freezer paper separately, and had him open it first. He had a confused look on his face, but said thank you anyway. So polite!