how do I stop pop-ups and ads on safari

You could try downloading and installing an ad-blocking extension from the Mac App Store. Have a look through each one and check out it’s features and reviews, and download and setup one that you think will work for you.

Me personally, I use Adblock Pro.

Follow these helpful steps:

1. Open Settings
2. Tap Safari
3. Tap Block Pop-ups to toggle on

Unfortunately, there’s no solid way of blocking ads.

Ad Blockers don’t always work, but they compromise your security by logging your keystrokes (dangerous for username/password access to your Amazon or bank account).

There are tricks to avoid ads, such as using the Reader view (100% blocks all ads completely).