Everybody counter steers a bicycle, because it’s simply physics in action, and the same physics applies to everyone. You don’t need to learn it. Also, it only occurs on entry to a corner, not through the entire corner. Although counter steering a bike, and oversteer both involve steering in the opposite direction of the corner, they are done for very different reasons, and shouldn’t be confused. Oversteering is done when the back tyres are sliding and is common in motorsport (especially non tarmac). On a bike, it’s very easy to fall off (high side or low side) if you try it, a car, not so bad. When oversteering is required, it’s usually not on the entry to the corner, but at least the exit. So, it’s kind of the opposite to counter steering. One is a way to turn in, the other is a way to control the line on exit.
