Welcome to Shopify!
I think most of your questions have answers here
Some apps allow you to install and used them for free while your Shopify store is a Development store.
Professional Shopify Partner. Check out our Apps in the Shopify App Store:
? Super Gift Wraps | ✅ Terms and Conditions Checkbox | ♬ Custom Background Music
⏳ Scarcity: Cart Countdown Timer | ? SocialBar - Social Media Icons | ⟳ Idler - Auto Store Refresher
✨ Magical Browser Tab Animations | ⚠️ Product Warnings & Pop Ups | ⏰ Low In Stock Alert
❤️ Custom Falling Images Effect | ☔ 3D Falling Snow/Rain Effects | ☝ Colorful Back To Top Button
?♂️ Waze & Google Maps Navigation | ♻ Update Cart Button Remover