Q: help

If you have problems opening webpages, take a look at these troubleshooting techniques suggested by Apple.

https://support.apple.com/en-us/HT204098

Go to Safari menu (At the very top right side of your screen next to Apple icon), choose "Quit Safari"

press "Shift" button and while holding this button on your keyboard single click on the Safari icon on your Dock.

Open Safari - Preferences - Privacy - Remove All Website Data.

Open the Go menu with Option (Alt) key pressed - Library - locate Safari folder and move it to your desktop. Restart your Mac, open Safari and delete the folder from your desktop.

Also, check your default homepage.

Safari - Preferences - General

On your Mac, force Safari to close. The next time you open Safari, hold down the Shift key while Safari opens.

This prevents Safari from automatically reopening any windows.

Several helpful hints of this type are within an article that covers more than one issue; avoid dismissing the title:

• Stop pop-up ads and adware in Safari - Apple Support

For your own information and to help remove other problematic things, you could use http://etrecheck.com/#tips

also read through http://www.thesafemac.com/tech-guides/ for details on malware, adware, & performance issues.

Good luck & happy computing!