I use Excel to set up a data table that has all the information of the snake down to who produced it. I track their meals and the dates I feed. If they refuse I mark DNE for did not eat. I track their weights monthly. I note everything. I note when they go into shed, when they shed and how well it was shed (99% of the time they have perfect sheds). I note when their water is changed. You name it I note it. Thats just me though.... Maybe a bit OCD.