I am a machinist with 20+ years experiance. I have been running and editting G and M code programs for at least 10 years. I would like to learn mastercam to improve my marketability, and open the door to an office position when Im ready to move off the floor. I would really like to start by familiarizing myself with the program, but there are many different versions, and many places to spend money; I want to spend wisely, if necessary. Thank you for your time and help, in advance, Bill