It was a long time ago for me, but we were told to develop our own format and be able to explain why we had chosen to do it that way. I chose to do a notebook with a spreadsheet for each horse with the months in columns and the vaccines/ deworming/ shoeing/ dentist/ coggins/feed etc. in rows, and then write in the date and any notes in the appropriate boxes. (i.e, for January and Flu/ Rhino I would write 1/27, serial no. 1234567; for February and Farrier I would write 4 new, no studs) This is still how I would choose to do it based on real world barn management experience-- the sheets can be easily photocopied and sent with the horse if it’s sold or changes barns. Use a separate sheet to log expenses. For conditioning I found it easiest to write on a calendar in the date boxes. (May 1st 10 minute walk hack,10 minutes trot, tried pelham but he hated it, stepped on himself and pulled RF shoe, try bellboots next time).