I have found that Kintrax works wonders. It allows me to keep track of my animals as well as design and print my pedigrees. You are allowed to set the guidelines for how long your breeds gestation is, and how often you want to rebreed, and the system will send up notes on when to put in your nestbox, when to wean, when to rebreed, and stuff like that. Now in addition to that I have a binder where I keep all my information, written system for ear numbering, pedigrees, death records, birth records and the like, as well as printed calendars for the next couple of months.
Since I have two small kids, both with challenges (7 yr old duaghter had adhd/ocd/odd/bi-polar and 5 yr old son had autism/adhd), as well as attend school full time (online college) my days are fairly crazy. I keep a huge dry erase board near my front door which I have turned into a calander as well. I use different colors to mark of events such as b-days, annivs. ect, appointments, school deadlines, rabbit buisness, and anything else I need to remember. It sounds like alot but with the big calender I can keep everything straight. Good luck.