I recommend everybody purchasing a repair manual for any vehicle.  Even if you're not mechanically minded and don't intend on doing any repairs yourself, being somewhat familiar with the inner workings of your vehicle will help you to properly maintain your vehicle as well as assist a professional in properly diagnosing and repairing an issue.  This could save you some bucks down the road and potentially protect you from a crooked mechanic that wants to replace your muffler bearings or flush your blinker fluid reservoir.