First remember to convert the files to text files, use some of the tools on this forum.
Secound there is the beginner documentation file in the forgetools package. Note that some of the information and the reference files are outdated, but it is good as an introduction.
Third there is a wiki here: http://sinsmodding.dreamhosters.com/index.php?title=Main_Page though it doesn't have all the avaible information.
Fourth here is two lists for the enum values in buff and abilities: https://forums.sinsofasolarempire.com/306405, https://forums.sinsofasolarempire.com/366795.
Fifth I can't come up with anymore 
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And never be afraid to ask here, no questions are too stupid.
