When purchased my first bees, back in 2010 I opened a file titled "Apiary Notes". I would write day, time, weather condition when installed my nucs, did splits, requeened the hive, treatments, feeding, everything that was important, or I thought it was.:grin: I would write it down together with my observations. Reading it later helps you in planning next season, comparing, making better decisions. I found it to be a very useful tool in my beekeeping journey.