If you live in an urban or suburban area where crows are around it's not too hard to befriend them. Rural crows are harder but not impossible.
First and foremost they like food. Peanuts in the shell are a favorite treat but most anything works; crows are omnivorous. It's probably not good for them, but they adore cheetos.
Photo: not a good shot but the only one I have of my beloved Tatterwing demonstrating next-level peanut technique: five at a time by spearing. No other crow figured this out.
If you feed them regularly, they will come to recognize you. They're remarkably good at recognizing faces, gaits, and even the sound of a particular car's engine.
In the rain wearing a new jacket with the hood up? They recognize me.
After a year away from the office due to COVID policies, I thought my office friends would have forgotten me. No. They spotted me within a few yards of the parking garage.