1. Assuming a conjunction (I have one), which planet is earlier in the zodiac. The interpretation will be different. The basic idea is conservative/inventive, or such things....
if Saturn is first, the restraint is followed by revolution, but the opposite occurs where the positions are reversed.
What about aspects to the pair? Is one of the two more closely aspected? By the same planet, or by different ones?
What is their ruler doing? Rulers determine how the planets under their dominion will act. If the ruler is well conditioned, the basically malefic nature of the conjunction will be ameliorated, or tempered (in theory -- you need to see the particular chart). If the lord (dispositor -- dispositors dispose planets toward certain things and qualities) is in bad condition, the conjunction can be quite troubesome. The term lords should also be consulted. Rulership is always very important, and is often ignored (at the astrologer's peril). Use your dictionary and look up "determine," "dispose," "lord", "incline" and other words related to "rule." That will give some understanding of rulership in astrology.
If the two aspect the same planet, you must examine orb of aspect. Which of the two beholds the closer (and therefore more powerful) aspect? Is one applying, the other separating?
One way to understand such conjunctions (and aspects generally) is to remove your mind from the strictly astrological perspective (here is a conjunction of Saturn and Uranus.....What does it mean?) and instead interpret each planet singly (Saturn is in Taurus, stationary, in XX house, trine Jupiter, with Venus his lord in such n' such a condition.....all of which means thus and so) and then do the same for the other planet. Then you compare the meanings, or interpretations of the two and use common sense to see how they might work together.
For example, in my chart, Uranus beholds a partile applying minor aspect to the ruler of the horoscope, Moon (hmm...Moon's closest aspect, and it's applying partile, and Moon is lord of the horoscope -- that alone says "This is Important and a very strong influence in the life". Saturn and Uranus are in a 5 degree conjunction (so I know that something, some event most likely, happened right around age 5 and that event will help me see the meaning of the conjunction), Saturn applying to the stationary direct Uranus (aha, so Saturn is the significator and brings something to Uranus, the promittor, and activates what was promised by Uranus). Meanwhile Saturn beholds the closest square in the chart, a mutually applying one to Mercury. He is also in a 4 degree square, applying, to Sun. (Both of these aspects occur before the directed conjunction matures -- age 5 -- and they set up psychological conditions that will affect how Saturn acts -- but after the almost immediate Moon-Uranus aspect. So now we have the order of timing in terms of formation of character and precipitating events. Cool.) There is more, but these kinds of things will tell how the conjunction works. And they are in Taurus, so it will be very important to examine Venus.
If you just leave it at "Saturn conjunct Uranus" you will not get much out of the horoscope, and what you do get won't be very accurate.