Getting my Freon License

So I've finally decided to get my freon license. I've been putting it off for a while, and am tired of having it hang over my head. I think I'm going to go through epatest.com, and start off with my 608 Cert first so I can start draining fridges and freezers with a used machine. Hopefully after I get certified with all of the equipment, I can start advertising to appliance companies and A/C repair men to buy their old units. This should be fun.