Drafting is a new class and we've been doing drawings practicing different tools and things. It's very fun, but I always need help with something on a drawing. So far, I've learned one technique called the "Criss-Cross Trick". You take your t-square, turn it over, and line it up with two corners of your work space. You then draw a small line and do the same the other way. Wherever the lines intersect is the center of the work space. CADD is a drafting program that helps engineers create plans for items or houses. I've made two drawings on it and it's fairly simple to use, if you know how. I don't use the official version, I use Google Sketch-Up.