Regarding The buttocks and waterlines, in the layers menu there is a box where you can choose weather show the intersections in the model and in the linesplan, check there is probable that those check boxes are not “checked”.
Regarding the first question “deck”, english is not my primary language therfore and don’t fully understand what you mean, maybe if you explain me a little bit more i can help, sorry about that
Regarding a Book, there is a book called “Ship Stability for Masters and Mates”, by B Berret (british book), it is very good explaining the basics of ship stability and has some exercises that may help you. Hope this information helps
In the download area of this web page is the manual for the software I have found it very helpfull