I right a lot of my adventures and finish them pretty well, but I never know how to start one. I always so it starts on a imperial guard base and they are in a briefing room and then we just go from there. I really dont know how to start a adventure other than that. please help

What sort of Inquisitor do your acoltyes follow? Perhaps you could use that as a good set up to start out an adventure.

For instance, if your Inquisitor is a excintric Rough Trader, (as my particular one is) you could have them meet on his ship and sit down for dinner while being served otherwise fancy food from servants sporting gilded chains around their necks (and their female of course...) as he personally briefs them then promptly drops them off with a lander and tells them not to get killed (or the lander damaged) as they accomplish their mission.

Are you talking about starting an entire new campaign or a new adventure with a currently established group and existing Inquisitor which whom they already have a relationship? This will be an important part of defining how a new adventure should start.

If the former, have each one picked out of a tight situation in media res - this individual is captured at the end of a rather botched criminal enterprise and is the sole survivor ... just as he is about to be executed he is pulled off the line by someone and told to meet at X location; another ends up in a medicae emergency ward after nearly dying disarming a dangerous heretical cult, while she is healing someone comes to her and praises her bravery ... while noting that her medicae coverage won't replace her damaged spinal injuries well enough to get her back on the streets ... though the man he represents will ... and it would also be something of a promotion; etc.

The person they deal with remains shadowy and each member is given reason - individually - to draw their own assumptions about just who or what he is, but the end result is he pays well and the people he asks them to kill/items he asks them to recover could certainly support the law abiding members of the groups theories that he is a high ranking, covert member of the government; while the criminals will be given plenty of reason to assume he is some kind of criminal power on his way up and looking to take out the competition. These are all theories he encourages through his intermediaries on a case by case basis - having his underlines reassure each group in private that they have nothing to worry about.

Why is he doing this? Because he wants acolytes who believe they can work without the weight of the inquisition bearing down on them ... he wants them to believe that secretly their leader is watching their backs and giving them the freedom to do their jobs to their utmost. And he wants them to feel free to watch one another and report to him without the sense that they should be sticking together and seeing him as some kind of enemy.

He does sometimes gather them together and give them mission briefings, but he also tells them to take initiative if they see something they feel needs to be addressed and then has agents conveniently drop information in their laps - making it look like chance occurance. He wants them to feel as though they can accomplish on their own to some extent, so they don't chafe under his control and start looking for the next game in town ... a careful ballance between direct intervention and granting them a sense of freedom - like a parent raising a teenager. (yes, he is a manipulative bastard, and proud of it)

(PS. Apparently you're not a native english speaker so I thought I should point out, that in the english language you always place an "n" after an "a" if the next word begins with a vowel ... thus you'd say "an owl" rather than "a owl" or "an apple" rather than "a apple". Just a tip to help you grasp the written language better)

Well, if it is a "regular mission", they will have to be briefed somewhere. For sure, you can change the location of the briefing room (see the downloadable "Edge Of Darkness" for inspiration on that one) but that won´t be different.

So, if you want a different start, the adventure has to be different from "misson style". This would mean that something happens to the pc (and all of them) or they are able/permitted/funded to start investigationson their own.