People I've talked to say it's the most laid back job ever. You have to legally be there in order for it to be open (thanks state of PA). People will come in and you'll counsel them about the drug. As well as make recommendations. There are a lot of differences between the strains as each strain expresses differing levels of THC, CBD, and terpines. The down side is that you won't get paid that much as they know what they have. $80k a year full time. Yet they still get a lot of interest from pharmacists that can't get a job or are simply sick of retail.
Don't make a career out of it, though. Once recreational gets passed, they really aren't going to need the majority of medical professionals anymore.