You will find all sorts of tutorials here in detail. The initial tutorials are from my older blog (Photoshop, and Bridge). Clicking those will take you to my older blog.
WP Mail SMTP is a WordPress Plugin to reconfigure the SMTP instead of mail in WordPress.
Contact Form 7 is a easy to use WordPress Plugin to create multiple forms with fully customization options.
Essentials covers the in-depth of the tools in Photoshop. You will find tutorials that are more detailed and cover almost all the options for a single tool. The tutorials will have more screenshots to help and guide you more clearly.
Unlike Essentials this will not cover only a selected tool but explore all and help you workflow faster.
Bridge help you to organize your files.