I got a cute binder, some dividers and clear sleeves. When I find a good recipe online I print it out and put in in a sleeve and add to it's section. The best part is I can remove the individual recipe while cooking so as to take up less room and the sleeve keeps it clean, just wipe with damp towel.
Every week I make out my meal plan on my computer, print it out and put it in the pocket in the front of the cook book. I then take all the recipes I need for that week and move them to the front for easy access and so I can refer to them while making my shopping list for the week.