Just about everyone who applies to vet school has shadowed a vet at some point, if not actually worked for one (I suppose there are a few people with only research animal experience...)
Is there specific job duties you're wondering about? As a vet assistant in SA practice, I've done everything from rooming clients, talking to them about their pets, restraint, blood draws, iv cath placements, monitoring anesthesia, bandaging, assisting in surgery, taking radiographs, giving oral and injectable medications, filling prescriptions, lab work...
The vets mainly examine the animals, request what they want the staff to do (i.e. this cat needs a blood panel, a pepcid injection and some sub-q fluids), write up the medical records, prescripe medications, induce anesthesia (if no RVTs are around) and perform surgery. Every case is different, and depending on the practice, what the duties of the vets are vary. What some people find interesting, other people find boring. I personally love microscope work, fecals, blood smears, urinalysis, cytology; others hate it. I enjoy the critical/internal medicine cases whereas others enjoy dermatology cases.
mtrl1