How to learn idle speed again after cleaning the throttle?

According to different vehicles, there are two ways to initialize: the first way is to turn on the key to the second gear, that is, the gear indicated by the instrument is fully lit, then wait for 20 seconds, press the accelerator to the bottom and hold it for about 10 second, then release the accelerator, turn off the ignition switch, and pull out the key to complete the initialization. The second is to turn the key to the second gear, hold it for 30 seconds, then turn off the ignition switch and pull it out.