I downloaded this to see the style of the book, as I read a lot of complaints about the actual core book having no art and the style look too, "1980s like" from various reviews. Its free, so who can complain, really?
Downloaded it and I thought the layout was fine and it was an easy read. I rather enjoyed the style and the few pictures. I think most people today are spoiled with the new flashy colored splash book that are annoying to look at.
Now the content itself.. Any person into Trek can basically skip this free download, as I believe its geared more towards people who never experienced the original Trek tv series and maybe jumped into this game from the new recent movies. It doesn't really tell you much more then things you'd know as a Trek fan.
Its basically a nice preview. No rules though.