What are /r/FranchiseHockey's favorite Products & Services?

From 3.5 billion Reddit comments

Read this book, it's pretty easy to get through quickly and while it won't make you a hockey expert, it will boost your knowledge by leaps and bounds.

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https://www.amazon.com/Take-Your-Eye-Off-Puck/dp/1629371203/ref=sr_1_25?keywords=hockey+books&qid=1579380849&sr=8-25