Pininos literally translates to "first steps" or "beginnings". It's a charming and somewhat informal word that evokes a sense of nostalgia and humble origins.
In the song, the lyrics mention "Allá en San Luis de La Loma donde hizo sus pininos" (There in San Luis de La Loma where he took his first steps/beginnings). This refers to the protagonist's early life and the place where he started out, giving insight into his journey from a modest past to his current success. It's a more evocative word than simply saying "comienzos" (beginnings).
Get ready to meet a true entrepreneur in Ulices Chaidez's "El de Guerrero"! This corrido introduces us to a man from Guerrero, Mexico, who is described as "Una persona muy fina, muy humilde y con principios" [a very fine person, very humble and with principles]. He's a self-made man, remembering his humble beginnings in San Luis de La Loma, where he "hizo sus pininos" [got his start]. Now, he's enjoying a strong drink and reflecting on his journey.
Family is at the heart of his success, and he credits San Juditas (Saint Jude) for his achievements. He's proud of how far he's come, always keeping his "frente siempre en alto porque mucho me ha costado" [head held high because it has cost me a lot]. He's known as "el menor entre la manada" [the youngest among the pack] but he's a sharp businessman, running a company that supplies "cuadros" [items, possibly referring to framed art or something similar in slang] that are in high demand "allá en el gabacho" [over in the US]. He values loyalty, keeping only trusted people by his side because he's "curado" [cured] of betrayals. This song is a toast to hard work, family, and staying strong through life's challenges, with a little bit of party thrown in when a deal goes well!