These are guides to performing the various necessary actions to keep the station running smoothly or to accomplish your personal objectives.
Hacking - There are many objects on the station that can do interesting things if properly reconfigured.
Construction - There are also many items, including machines and weapons, that can be constructed with some work from the prospective engineer.
Tech Research - While many objects can be fabricated cheaply by major factories in Earth orbit, a bit of deconstructive analysis can help you recreate these technological marvels with local resources, cutting costs and saving the bottom line.
Chemistry - Everything from medicine to toxins to space drugs to explosives to strange and unusual things can be made with the right concocting skills.