A common approach to studying informal logic is to start with logical fallacies.

"I had no interest in studying mathematical logic or the logical analysis of language."

Four years later he was sent to Prague to study grammar and logic.

He eventually made his way to Iran, where he studied logic and philosophy.

In 1719, he enrolled at the University of Edinburgh to study logic and theology.

From 1631 to 1635, he studied mathematics, physics and logic at Leuven.

I've my reasons for not wanting him to study entropic logic.

He resumed his preparation for the university, studying Hebrew, logic, and theology.

Concluding his early primary instruction, he studied latin, logic and rhetoric.

Grey's travels led him first to Cologne, where he studied logic, philosophy, and theology.