It's quite simple. Create a pocket account at https://getpocket.com
Add some articles or Web Serial chapters to your pocket (easier with the Save to Pocket extension)
Add the Pocket account to your Kobo.
Sync your kobo.
It's such an under advertised feature of the Kobo devices.
Better but personally I don't like creating accounts on the kobo, would rather do on the desktop: https://help.kobo.com/hc/en-us/articles/360017763753-Use-the-Pocket-App-with-your-Kobo-eReader
That's what this does:
Tap the 'more' skinny hamburger menu just ~~above~~ below this message to 'view source' of the below:
blah blah blah links to asklemmy@lemmy.ml
Actually..better, here is one for an instance that is neither yours or the one you posted into:
blay harg vlar