<p class="MsoNormal">To start with Shopify App Development, create a Shopify Partner account, set up a development store, and use Shopify CLI with preferred languages like Node.js or Ruby. Learn Shopify API, Polaris for UI, and follow official docs. Build, test, and deploy apps via the Partner Dashboard. Shopify App Development empowers you to create powerful, custom solutions for eCommerce growth and store optimization.