Hawkeye it's just a diary but you can personalise it to include whatever's most helpful for you to be organised. So in my main one I have:
Month to view-this has all my tuition sessions hilighted and I also mark on it whenever we're away, so it basically functions as a work calendar
Year to view-this has DH's holiday marked on it
Birthdays-I add whenever a baby's born and put the year too, so this is a perpetual list
Day to view-this is where I put in appointments, plan lessons etc. I use the right hand side of each page as a to do list.
Between each month in the day to view section I have a to do list for the upcoming month, so I write in 'pay car insurance' or whatever and then when I get to the month in question I can see what needs to be done that month and assign it to a day.
I also have a finances section where I keep a running tally of how much we've spent of our various budgets-eg gas, elec, petrol, clothes. I keep last year's in there too so I can compare easily.
At the very front I have some card slots (on a plastic wallet so in addition to the leather ones). The leather ones hold bank cards and driving license while the plastic ones hold loyalty cards, vouchers, stamps, a couple of blank cheques etc.