I love Moleskine. I discovered one sweet little black one on sale once at Barnes & Noble and bought it not knowing it would become so special to me.
I used a single Moleskine as my all purpose little notebook to jot absolutely everything and anything in it. If I got a phone call with an insurance quote I grab the book and write it down, If someone calls and tells me of their upcoming medical operation, I jot it down with date, details etc., car mechanic tells me what's wrong with the car, it goes in the Moleskin, an address for an upcoming appointment- bam! it's in there.
You get the picture. I can look back and see details of conversations, dates that need to be remembered, little jotted addresses with hand drawn maps...
One for each month makes it super easy to go back and refer to any and everything I have in there. I even use it for shopping lists especially for parties complete with guest lists which morph into seating arrangements.
I love the way I can use my Moleskines to think through my life and get it down quickly and all in one place; it's my stream of conscience all in one easy to reference set of books.
Each of the twelve books has a few pages covering all twelve months for planning ahead and then for each months booklet there is a page per day for more detailed planning for that particular month.
The books come with a number (1-12) on the front for each month of the year but also included are plastic stickers you can adhere to the front of each book with the actual month name: January, etc. if you prefer that.
And at the front of the folder that holds all twelve books is a tiny file folder for receipts or business cards or anything of that size.
Need I say more? If you love to be organized and need to refer back to details this is it- cute retro organization!