There, little Konstantinos learned how to read the synaxaries at church and the Salvation of Sinners by Landos (Αμαρτωλών Σωτηρία του Λάνδου).
Because he developed an enthusiasm for knowledge, his parents delivered him at fifteen at the school of Tyrnavos, where he had Ioannis Pezaros (Ιωάννης Πέζαρος) as his teacher.
He was taught of Ancient Greek classical writers and basic principles of philosophy jointly with mathematics, geometry and physics, in which he showed special inclination.
Metropolitan of Larissa, Dionysis Kaliarchis took him with him to Constantinople and introduced him to the Grand Dragoman of the Sublime Porte, Constantine Ypsilantis.
When Constantine was declared Prince of Wallachia, he suggested hiring him at his services, but Koumas refused and returned back to his homeland, where he became a teacher.
Deeply saddened, he fled to the Vineyards, where he occupied with Asanis in translating the work of a French astronomer and mathematician Abbe de la Caille, about conical prefectures.
Also, Koumas was appointed as a private teacher to the wealthy merchant Stephanos Moschos (Στέφανος Μόσχος), while at the same time, he applied to the University, mainly attending math-related courses.
With the still intense echo of the French Revolution, Vienna at the time was full of liberty and new ideas, it was a center of a spiritual and artistic movement, already having a university since 1365, while books, newspapers and magazines were being distributed in several languages.
In 1814 he accepted the post of director of the Kourotsesmeio school in Xirokrini (north of Constantinople), where he remained for only one year and returned to Smyrna, where in 1815 his daughter was getting married.
During his stay there he dealt with the translation of a Greco-German dictionary (some "Reimeros"), considering German as the language of devotion to science and rationalism.
From there he will go to Vienna where he is arrested by the Austrian police of Metternich on charges of participating in a conspiracy, but is quickly released on restrictive terms.
In Vienna he completes the compilation of his dictionary - his only work that he managed to save - and then he will proceed to his publication, while immediately afterwards he will deal with the writing of the History of Human Acts from ancient times until 1831.
In the period up to 1836, Koumas refused twice to assume duties related to educational activities in Greece due to his fragile health.
Koumas believed in the social character of education and considered that teaching in a more familiar language contributes decisively to the achievement of this goal.