I have printed out the pictures for the "favorites grid". Instead of having them all the same size - they vary. I placed my photos on black cardstock (the orange piece of paper is in the kit). It ended up measuring 7 1/2" by 10". I will add two pieces of left over patterned paper to the empty blocks.
The example provided by Basic Grey has 9 photos all sized 2.5" by 3.5" butting right up against each other (I was gussing before when I said 2" by 3"). The point is - the picture grid is the only thing on the right page of the layout - so don't stress about sizes of pictures or the size of the grid. Keep a basic rectangle shape (or even a square - max size 10" by 10")and you'll be fine. Leave space between them or not - your choice.
It took me about a half hour to figure out how I would place these photos in the block - so it is VERY important to do this before class. Or AFTER class, but we probably won't have enough time DURING class.
The class list suggested by Basic Grey is:
Charcoal Chalk ink
Black journaling pen
large scalloped scissors
Don't stress! Bring what you have - we'll share the rest.