In this tutorial we show you what theme customization is from a user’s perspective. We also walk you through using the WordPress Theme Customization API. Good basic tutorial for understanding Theme Customizer concept, including Sections, Settings and Controls. Source: Getting Started with the WordPress Theme Customization API
People ask the question a lot – should they charge annual or monthly subscription fees. Here’s my take. Chris recommend annual. Couldn’t agree more. Source: Should I charge annual Subscription Fees? Or monthly?