Feel free to change things around if you think there's more transparent way to organize the material; this is just what seems to make sense to me at the moment. I'll give some further organization inside each page, but it seemed like a topical organization would be the easiest way to go.
PhysicsAnalysis - Collection of links/docs/talks on physics analysis tool
MeetingTalks - A collection of talk slides given in various meeting
DetectorGeometry - an overview of the geometry of the TRT (and ID)
AlignmentMathematics - for the mathematics behind alignment algorithms
AlignmentTechniques - an overview of the different types of alignment algorithms, including data
ArticlesAndNotes - Collection of Articles, Notes, Thesis, etc... on TRT and ATLAS in general
SoftwareReference - technical documents & links related to much of the software used by ATLAS
GettingStarted - probably more for future students; some links about to get started running cosmics data at CERN