From highest to lowest planet degrees, ie, something at 29 degrees would be higher whereas something at 1 degrees would be lower.
The planets which are used are Sun, Moon, Mercury, Venus, Mars, Jupiter and Saturn, as they are the closest to Earth, and therefore most impactual in physics.
1st 25:41:11 Mars Personality
2nd 21:56:26 Venus Career
3rd 15:06:38 Sun Gurus
4th 11:46:21 Saturn Home
5th 04:17:58 Moon Children
6th 03:14:25 Jupiter Obstacles
7th 01:02:51 Mercury Marriage
Rahu and Ketu represent in your life cycle/vimshottari your obsession and separation. So during those time periods you will learn about your obsessions (rahu) in wherever its placed or become separated (ketu) from wherever its placed.
The Jaimini Karaka’s [your planets size, larger number = bigger, in reference to the image], are used in Vimshottari [life cycle], to tell you when these things are going to happen in your life. Ie, if you are going through a dasha time period of the 4th largest planet, you will have learning experiences about the home for the year/s that you are in that part of the cycle, etc.
Goodwin, J. K., 2009. Advanced Primer of Sidereal Astrology. 1st ed. Kala Purusha Publications: CreateSpace Independent Publishing Platform.