Below is a short list of Agile and Scrum resources for you to become a better ScrumMaster, learn more about Scrum, and develop further as a Scrum Professional.
Carlton Nettleton (a Certified Scrum Trainer) has created three very useful resources including: Fourteen Observations of Good Scrum Practice, Scrum Workflow, and Scrum Rights. Link: http://lookforwardconsulting.com/resources/
Mark Levison (a Certified Scrum Trainer) and Ellen Grove (an expert Agile coach) have created five articles to improve your Agile implementation such as: Code Smells to Refactoring, Learning Best Approaches for Your Brain, and Technical Debt a Perspective for Managers. Link: http://agilepainrelief.com/about/articles-and-presentations
Mishkin Berteig (a Certified Scrum Trainer) has written tons of articles on Agile methods and implementation. Find his posts and articles at: http://www.agileadvice.com
There are also plenty of other great resources on the net and many great books as well. Happy hunting!