How do I update a laptop that is running Windows 7 Starter Addition

you can flash a usb drive with the official microsoft tool and install windows 10.

https://www.microsoft.com/en-us/software-download/windows10

note: a 8gb or larger usb drive is required

I have an old laptop that I powered up for what looks like the first time since it got put in a storage container in 2011.

I plugged it in a week or so back to let it charge. I hit the power button yesterday and it started right up. It is a physically small Acer laptop. I believe they were referred to as Netbooks.

Since it is running, I'd like to upgrade it, as much as is possible, but at somewhat of a loss as how to proceed. I was able to log on to my home network but in an HTTPS world, both Internet Explorer I got hit with all sorts of messages about security updates but I don't want to waste any time updating out of date software. My skill with PC's is much improved since 2011 but this I need some guidance on.

I have an HP laptop running Windows 11 Home 23H2 that I can use to copy files for transfer to the Win 7 machine because I am guessing that the best option is to create some sort of boot disk and wipe the HDD, start fresh. Also, I am in the Windows Insider program.

Wiping the hard drive may put you further back than 2011 depending on age of netbook and there is NO Windows 7 download anyway these days..

And it is debatable whether you would even have Service Pack 1.

And Windows Update ended in 2020 anyway.

I have an old Windows 7 Netbook.

The specs are that low on them that all they were good for was Windows 7.

And they are not suitable to upgrade to a later OS, as Microsoft no longer sells 8, 8.1 or 10.

Besides that the Netbook manufacturer would not support that.

Essentially, you're out of luck as far as Windows is concerned.

Back in the day, if your particular netbook was capable of supporting Windows 7 Home Premium, the method to get there was to use the Windows "Anytime Upgrade." That path has long since been unavailable.

You could also have used a retail copy of Windows 7 Home Premium or even a "system builder" version -- but those too are no longer available from legitimate sources.

Your best bet, if you want to use this netbook, is to see if you can find a still-supported netbook-oriented version of Linux. See, e.g., https://en.wikipedia.org/wiki/Comparison_of_netbook-oriented_Linux_distributions