Look at the GED programs that are available in your county by going to the Arizona Department of Education website, which is listed in the resources section. Call the program and ask if it has open enrollment, which means that you can register for classes at any time. Ask what documentation you need to bring, how much the classes cost and what times they are offered.
Take an assessment test. This test will tell you what areas of the GED you need to study for, if any. If you perform very well on the test, you can register to take the GED anytime you want. Arizona has no requirement that you attend a program before testing. Most people, however, will need to gain additional knowledge and skills before testing.
Attend the GED program regularly if you want to complete your GED in a relatively short amount of time. Individuals who attend sporadically tend to drop out or end up achieving their goals much later than they originally anticipated. As a 40-year-old adult, some of the younger students in the program will likely be looking at your example. Study at home as well, using the materials provided by your adult education program.
Read the testing guidelines so that you'll be aware of the scores you need to make to pass the GED. In Arizona, you have the option of taking the GED in English, Spanish or French. You will have to make special arrangements if you will be taking the test in a language other than English.
Locate the GED testing center closest to where you live. Teachers and administrators at the adult education program you are attending can tell you which center to go to. Set a date to take the test.
Bring two forms of identification with you when you go to take the test. You'll need a driver's license or state ID, as well as your birth certificate or passport.
Print out a copy of your GED transcript after you have passed the test. See the resources section for a link where you can do so. Show the transcript to potential employers who ask for proof of education.