If you want some very minor hints:
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First: You have played and completed Zak McKracken. You shouldn’t have a lot of problems with these two. Or any other adventure game out there.

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You can complete missions in non-optimal ways. You will get a rating each time, but you don’t have to be perfect.
E.g. sometimes Red Shirts die
. Let’s call it collateral damage and move on.
If you don’t want this to happen though: I know you know how save systems work
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You will learn this early anyway: As a Star Trek officer you shouldn’t be unprepared.
In this game this means to squeeze as much information out of the computer library as possible before a mission.
One rather stupid flaw in this game is that you cannot access the computer anymore after beaming down, even when you are still able to contact the ship.