A knight jumps three squares and falls over one. Or, on a bad day, jumps one square and falls over three.
My first chess book was a book on the Fischer-Spassky 1972 match. I remember following the games of the match every night. I was ~9 years old at the time. Fischer was the first professional chess player whose name I knew, and Spassky was the second. I was part of the Fischer generation too.
The L shape is not particularly well suited. Imagine blindfolded. 1 square vertical or 1 horiz then 1 square diagonal forward works best imo. The knight does not jump over but through the 1st square.