Tcl
- Tcl Programming – Richard.Suchenwirth, et. al.
- TclWise – Salvatore Sanfilippo
Teradata
Tizen
- Tizen for Dummies – Jon Lansdell, Cheng Luo, Michelle Somersville (PDF)
TLA
- Specifying Systems: The TLA+ Language and Tools for Hardware and Software Engineers – Leslie Lamport (Postscript or PDF)
TypeScript
- TypeScript Deep Dive
- TypeScript for C# Programmers
- TypeScript Succinctly, Syncfusion (PDF, Kindle) (email address requested, not required)