There's always room for further contributions or follow-up questions, but a couple of previous posts on Market Garden should give a good start:

• [What went wrong with Operation Market Garden?] (http://www.reddit.com/r/AskHistorians/comments/2hvlk2/what_went_wrong_with_operation_market_garden/)
• [What made operation Market Garden a failure?] (http://www.reddit.com/r/AskHistorians/comments/1jq7cj/what_made_operation_market_garden_a_failure/)