A series of tutorials and articles on various tips and techniques (such as bounce photography, syncing and remote firing) to help you make the best of your Speedlites.
Flash Photography Step by Step Learn Photography by Zoner Photo Studio
How to Capture Portraits with Indoor Flash Photography
In Focus: The Basics of External Flash Photography
External Flashes—The Ons and Offs Learn Photography by Zoner Photo Studio
Speedlite Camera Flash Basics - Canon Europe
A Guide to On-Camera Flash
Using Flash in Wedding Photography: What You Need to Know
Flash Photography Camera Settings for Beginners - Improve Photography
Altura Photo E-TTL Auto-Focus Dedicated Flash (AP-C1001) for Canon DSLR Cameras
Built-in Flash Techniques #3: Create Dramatic Portraits with Daylight Sync
On-camera flash outdoors - Tangents
5 Simple Bounce Flash Photography Tips
Off Camera Flash Lighting Techniques in Photography-Press Center-GODOX Photo Equipment Co.,Ltd.
Corporate Photography Tips