It's actually this bit that concerns me: Rolling a bunch of dice and everything coming to a screeching halt because you can't figure out what the roll actually means.
The book has a fairly well written out section for how advantages/threats/triumphs/despairs can be handled. Also, since advantages/disadvantages cancel out, there are only:
Success with an advantage - complete what you're trying to do with a benefit
Fail with an Advantage - Fail the goal of the test, but set it up to be done later
Succeed with a disadvantage - Succeed, but take longer than you hoped, set yourself up for difficulty later
Fail with a disadvantage - Fail at what you were trying to do and suffer later
Succeed with neither - Simply succeed
Fail with neither - Simply fail
Then account for crit successes and crit failures (do what you were trying to do spectacularly, but suffer a major consequence, that sorta thing).
In combat there are pretty well laid out tables for how advantages/disadvantages can be applied.
Finally, part of the point is to get the players involved. Crowd source the interpretation of the dice. If some other player makes an excellent interpretation of what the dice could mean, go with it. The point is, have fun.
Example: "I am shooting at the stormtrooper from cover"
Dice pool: 3 agility, 2 skill, no boosts, no setbacks (probably some, but keeping it simple), short range, so one difficulty die
Roll 1 ability, 2 proficiency dice, 1 difficulty die
Result: 4 advantage rolls, 1 success, 1 failure
Response: "You just barely get off a shot at the stormtrooper, but narrowly miss anything important. You do manage to shoot the gun out of their hands (3 advantages spent). You sigh a breath of relief as you at least hit something…. (1 advantage spent, get back 1 strain)"
There are alot of different ways that could of been handled:
Recover 4 strain, recover 2 strain and get a maneuver
Negate the stromtrooper's defenses till next round
Give allies boost dice
The list goes on. Much of this really should get player input, with the GM just applying final say on what is actually going to fly.