Hi, first, you can find information about how to do Kegel's on the www. Just google for it.
Second, Leakage of semen at night (night falls or nocturnal emissions) can not be stopped by Kegel's, if you are looking for that.
Third, to build control over ejaculation and stay ;longer in intercourse, you need to learn certain techniques.
Next Steps
Please consult privately over phone or video