I need a few EDITS help please?

It seems the services page with slug “services” is missing. You may need to recreate it. If the desired services page does exist, but with a different slug, you could update the button’s link. How to do so depends on how it came to be in the first place. Try opening the home page for editing and see if it’s at the bottom of page content.

The video at correct size for the page is much smaller than 960 wide, it’s 460. Are you using a retina display which has double resolution? Add this to the Additional CSS customizer section:

.home #text-5 iframe {
    width: 460px;
    height: 259px;
}

The widget content is where to change the link destination. But the customizer link is not the URL to use. You want the page slug for the correct page to replace what is currently “services/” For example, if you want the button to link to pcandnetservices.com/computer-repair-nyc/, replace “services/” with “computer-repair-nyc/”.

Those How_To instructions can be used in place of the [button] shortcode. The shortcode essentially does all of that for you, given the right parameters (text, link, size, etc.) If you’d like to learn do more HTML coding for yourself, you could replace the shortcode with custom HTML from the How-To, but my giving you the answer won’t help you learn 😉 TBH, if I were you, I’d simply replace “services/” with the correct page slug.