Veterinary technicians assist veterinarians in providing care for patients. They perform a wide variety of tasks in a veterinary facility.
A very general list of things that a veterinary technician would do would include collecting patient histories, collect biological samples (blood, urine, feces, etc), running diagnostic tests, monitoring and medicating hospitalized animals, assisting in surgery, administering and monitoring anesthesia, performing dental cleanings, providing treatment for outpatients as prescribed by the attending veterinarian, filling prescriptions, answering client questions on preventative medicine, disease processes, medications, etc, maintaining inventory, caring for surgical and medical equipment such as anesthesia machines, taking radiographs, entering medical records, etc.
Hi Bard, try searching on google and other search engines for jobs, and also do a search for all the vet offices in your geographic area and visit them in person while you are wearing appropriate semi-business attire. Contact your area's ASPCA, the various city animal shelters around you, and other organizations that deal with pets. There are jobs, and if you go around via driving and stop in at various businesses, etc., you will make connections that will lead you to job possibilities.
If your heart is in being an animal science office assistant, then by all means take the certificate program, so that you will be more qualified. Don't listen to the nay-sayers. Be positive and envision the job you want! Best wishes.