http://lumusphoto.com/free-photo-videos/ Super Awesome Photography Training - Yours Free Today With Bonus Video!
Cleaning lenses can be quite daunting. This is how I clean my DSLR camera lenses. Usually I use a rocket blower to get dust off but when they get really dirty I use this hoodman lens cleanse kit. Here is the link below I'm so pleased they still sell these!
http://amzn.to/1nkkfUW