Congrats on ordering the cheat sheet! You're going to love how much easier it makes your brewing. I'm sure you're anxious to get it so we're going to ship it out asap.
In the meantime, I recommend you pick up some wet erase markers to use with your worksheet. I've tested a few and my favorites are the Expo Vis-a-Vis fine point markers. You can buy them at Amazon from the link below. Your local office supply store may carry them as well.
Enjoy the worksheet!