A good bartender always has advice for their customer's problems, which is why it's best not to bartend in a particle-physics lab or prison. Hone your listening ear with today's Groupon: for $75, you get a four-hour mixology class (a $150 value) at Bartending College. in Fresno. Bartending College invites budding cocktail chemists to gain hands-on experience, mixing, stirring, and shaking under the tutelage of seasoned instructors. During the four-hour mixology course, students learn the basics of alcoholic alchemy, blending liquors and mixers into sippable sensations. All Bartending College grads enjoy access to a Cheers dimension that currently, due to spatial fluctuations, contains only Cliff Clavins.