Check out some useful tips and tricks published as part of the CQ Best Practice content series:
- Useful variations in the authoring environment URL
- Troubleshoot CRXDE performance issues
- Advanced CRX search
- Validate user input in multifield components
- Define how users can interact with a component
- Include resources in JSP files
Read the article here: http://helpx.adobe.com/content/help/en/adobe-cq/using/tips-tricks.html