6"x24" Ruler
12" Square Up Ruler
6" Square
These rulers all have markings that let you measure all the different shapes needed as a beginner. (you can pick up all the specialty rulers later)
Good scissors
A small pair next to your machine for clipping threads and a large "good" pair for other cutting tasks.
Rotary Cutter
Large one for cutting large strips and a small one for corners.
24"x36" Cutting Mat
There are many brands available, I prefer Olfa rulers and mats because the yellow markings and the green mat are easier on these tired old eyes.
Welcome, Welcome, Welcome, come back often and don't forget to show pictures as you progress. You'll be great.