To learn western astrology quickly. We need to understand the difference between Vedic astrology. Western astrologers always strongly consider two important things to give predictions.
First one: Verifying the angle between two planets and its results.
Second one: Need to compare the natal & progressed chart for predictions. Using the angle between planets by overlapping and comparing the progressed chart.
Progression chart means in simple words, for example if a person is born on 01-01-2000 we have to add current age to date of birth then we will get progression date. 2019-2000=19 add this 19 to original date of birth to create current year progression. 20-1-2000 is current year progressive date. Given, great priority to Xth house. Considered planets Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn, Uranus, Neptune, Pluto