Hi Mike,
I use a rudementry simple system comprise a 3x5 spiral notebook and a writing utensil. My film holders are numbered (1,2,3 and so forth) and labled with the type of film that is loaded in each one.
When I make a shot, I simply note the date, the film holder number, brief description, exposure setting, and note N, N+, N-, N+++, and so forth.
After a day's shooting, I go back and give each sheet a sequential number using a sequence I dreamed up myself. A typical negative number is 84010 - 8 denotes 8x10, 4 denotes the year, 010 denotes the tenth sheet of the year.
When I print, I go by the negative number. But having noted which film holder each sheet was loaded in helps when there is a problem with a holder that doesn't show up until a print is made. For example, I had a cracked darkslide which showed up on the print. Knowing what holder the sheet was in when the exposure was made led to quick replacement of the culprit.