It can be hard to find posts in the Egosoft forum, as their search function isn't amazing. So this page contains links to several useful guides that are buried deep within the Egosoft forums and a few other helpful links.
The official link guides are pinned in all languages at top of the X-Universe-Subforum: english guide though one should be aware that the posts linked from it are not necessarily upto date. For example stay away from delray's boarding guide as (although it was probably pretty helpful last year) much of the information hasn't been correct for several patches, and if you follow its instructions you will end up wasting your time.
Plot Walkthroughs[]
Main plot missions walkthrough
Ship Info[]
Loadout suggestions for Hyperion/Vidar
Heavy Centaur Prototype loadout suggestions
Economy[]
Boarding[]
Your very first boarding guide
Where To Buy/Train Boarding Troops