The series runs from about eight to sixteen weeks. Knowing the shape of it makes the vet visits and the socialization window easier to plan.
Core vaccines
Distemper, adenovirus, parvovirus, and parainfluenza come as a combination shot at roughly eight, twelve, and sixteen weeks. Rabies is given once at twelve to sixteen weeks, as state law requires.
Non-core vaccines
Bordetella, leptospirosis, and Lyme depend on where you live and what the dog will do. Your vet will recommend based on daycare, hiking, and local wildlife.
In between
Socialization matters most before sixteen weeks, so do not wait. Carry the puppy, visit vaccinated adult dogs you know, and avoid dog parks and pet store floors until the series is done.

