You may read a book on the effects of Dasha and Bhukti. When you apply the knowledge on a horoscope you find the results do not tally. In this video I have explained to you what might have gone wrong. If you want to learn the technique of reading the effects of Dasha and Bhukti then see the video.
In this case study I have used the example of Rahu Dasha and Sani (Saturn) bhukti because it is one of the most read article of mine.
Please click on the following link to know more about how to read the Dasha and Bhukti effect.