If you're running a WordPress site, have a look at this plugin: https://wordpress.org/plugins/bitcoin-lightning-publisher/

@Alby might answer any questions you might have.

Yes, like HODL said, there are many wordpress plugins to accept BTC for an item on your web.

You can also sell them directly through Telegram using LNTXBOT, with the /hide command. Here is an example guide.

If you do not run your own BTC/LN node, you will need to use an intermediary to handle the payments, but I would not recommend that.
Here some plugins:

• CLN node plugin - LN payments, require node
• LNbits plugin - onchain / LN payments, require node
• Alby wordpress plugin
• NoMiddleMan plugin - onchain payments, NOT required node
• OpenNode plugin - LN/onchain payments, NOT required node but is using opennode as intermediary
• BTCPay legacy plugin - require node, onchain/LN payments
• BTCPay v2 plugin - require node, onchain/LN payments

and many more...

You can check out this video by BTC Sessions. It shows how you can setup a Lightning Paywall to monetize your content.