Besides a basic Tuxedo Bow, the Pinwheel is the best place to start when you want to start making professional style bows, IMO. This is the first tut I learned from, and you don't need to invest money on expensive templates. http://www.hair-hardware.com/pinwheelbowtemplate.html
I make the grooves in my templates a little wider and a lot deeper than these, and I have been using the same ones now for over a year. My pinwheels turn out perfect every time, and I can make other styles with them as well. Good Luck!