Michał Zieliński attended  Szkoła Oddziałowa im. ks. Piotra Skargi in Jarosław (primary school lasting 7 years). After competing it, he did a two-year practice in the profession of a carpenter. This trainingmade him a capable handyman.

In 1924 he completed a summer course of Basic Military Training in Świętosław. It took place from 1st July to 11th August 1924. He got the best mark A+ and everyone had a very good opinion of him. He was a young man ready for action, peaceful, dutiful and social.