Beyond staring and puzzling (which should work especially those familiar with the traditional notebook-based bullet journaling), perhaps these may help:

• The Memindex Method: an early precursor of the Memex, Hipster PDA, 43 Folders, GTD, BaSB, and Bullet Journal systems
• A year of Bullet Journaling on Index Cards inspired by the Memindex Method (see the comments for useful Q&A)
• After having done it for a while and experimenting for myself, I’ve become aware that chapter 4 of Sidetracked Home Executives does a good job of describing some of the repetitive task portions (the colored cards I have in the bottom row). It’s also not too dissimilar to Hawk Sugano’s GTD cards in his Pile of Index Cards.

Young, Pam, and Peggy Jones. Sidetracked Home Executives: From Pigpen to Paradise. Edited by Sydney Craft Rozen. 1977. Reprint, New York: Warner Books, 1981. http://archive.org/details/sidetrackedhomee00youn.