A Crash Course in Ada
This note explains the following topics: C-Syntax Pitfalls and Comparison to Ada, C-Syntax versus Ada Syntax, loop in Ada, Programming by Contract, Pitfalls and Issues when Programming in Ada, Identifier Casing and Loop Boundaries, The Order of Expression Evaluation in Ada, Distinguished Properties of Ada, Types and Subtypes, Constrained Arrays, Private Types, Polymorphism, Callbacks.
Author(s): Rainer Koschke
75 Pages 
The purpose of this guide is to help computer professionals produce better Ada programs by identifying a set of stylistic guidelines that will directly impact the quality of their Ada programs. This style guide is not intended to replace the Ada Reference Manual, or the Rationale, or to serve as a tutorial for the Ada programming language.
Author(s): wikibooks.org
NA Pages
Ada 95The Craft of Object Oriented Programming (John English)
The book is in three parts. The first part deals with the fundamentals of Ada programming. The second part deals with abstract data types. The third and final part is concerned with using the object-oriented programming features of Ada 95 to develop extensible programs.
Author(s): John English
NA Pages
