Downey's PDF is presented as a series of puzzles with hints and answers. It makes for an enjoyable few hours sharpening your concurrency skills. Covers much m

Downey's PDF is presented as a series of puzzles with hints and answers. It makes for an enjoyable few hours sharpening your concurrency skills. Covers much more ground than the "igloo book". Uses Python and C for examples -- much nicer than reading old-style Pascal code.