When he was 15 years old, his mother took him out of school and got him a job as an apprentice with a renowned Minsk photographer of Osip Boretti. Originally his function was to copy finished photos, but very soon, he was detailed to help with developing and retouching, skills that he retained for life and used from time to time until the end of his life. His sagacity and sapience impressed the owner, and Nappelbaum was entrusted to photograph clients on his own. But in 1987, Boretti had closed his studio, and Moses Nappelbaum hit the road in Russia searching for a new job in the acquired field. It leads him to various photographers in Smolensk, Moscow, Kozlov, Odesa, Warsaw, Vilna, and Yevpatoria. During this roaming, he gained a lot of new experience and understanding but had not found a place where they would take photos he already was dreaming of. He decided to enlarge the scope of his quest drastically and, in 1980, together with his older brother, emigrated 1890 to the United States. Initially, he attempted to replicate his Russian game plan looking for a job with already established photographers and photo enterprises, first in New York and then in Philadelphia and Pittsburgh. He was unhappy with the kind of jobs he managed to find and decided to start working for himself. Together with a companion, he has begun to work as a rent-photographer serving enterprises that chose to take photos for the entire personnel both in groups and individually. In parallel, he took up to make pins of local celebrities for mass distribution, mainly as a supplement to advertising. Later in Soviet Russia, he will capitalize on these newly developed skills.