As you are referring to "autotech", the first thing that comes to mind is best buy. If this is not the case with you, feel free to ignore the rest. If so, there is a test that can be taken on there as a practice and if you pass, you get a voucher for the cost of the actual test. From what I understand, it is a pretty good prep test. I work sales there and tried to take the practice to get the voucher for the test. Not so much to work installs there, although I'm sure I'd prefer it to the sales floor, but more so, just to have it and have them pay for it instead of me. Oddly enough, the only people that can access that test are those who are already in the system as "autotechs". So one must apply to that position first, before being able to take advantage of that. Says a lot about the company if they'll let someone install prior to being certified and not let others get certified before actually working in the bay lol. This being said, we have 3 installers there and only one of which I would ever let near my car lol.