There exist somewhere in this forum detailed explanations of how to texture segments - that will cover walls both inside and out and both floors and ceilings. Explanations cover how to get different textures on each and every face of a room.
They exist I know because I posted them way back so a search for wall and floor or wall and ceiling segments should return something of interest unless the posts have been removed or deleted.
Unfortuneately, many useful posts get lost over time and there is apparently no cataloging as such for various topics which could be easily found again. Search is your best option I guess.
Of course many useful informative posts often get mixed up with information about other topics as posters mix the topics even contained within one post so that a post title is often not very descriptive of its contents.
In each case in the original post here there is no better way in any case to learn how to do what you want than to study the default FPSC objects and their associated files and see how they are used by the program. If you want to learn - the best way is to experiment your-self except that its a longer process than a detailed tutorial, but once learned you are less likely to forget.
