If you have a Hyundai, they make all of their repair procedures, schematics, etc. available at http://www.hmaservice.com (you must view this in IE btw) - I haven't seen this type of data available for free from any other manufacturers though.
This site has really nice auto repair videos for car repair for your exact model: http://www.carcarekiosk.com - it's for basic stuff like headlight bulbs, cabin air filters, etc., but the videos are very helpful and free.
Check the website of your local library, often they have a subscription to pay sites that are free to access if you enter your library car number.