You can head to any website you know that wants to give you notifications on the desktop version of Chrome and press on the padlock logo that's next to the URL bar on the top left. If you've removed notifications and not blocked them, you can just head to the website again and it's likely you'll be asked if you want to subscribe to them again. If you've blocked notifications from a website you'll find it listed in the 'block' section at the top of that notifications page. This is easy, and very similar to the steps above. You may still get one or two sent through while the settings are finalized, but you shouldn't get many if any more at all. This is connected to your Google account, so it should mean you don't receive any notifications on any of your devices anymore. When you've hit that button, you've now stopped that website from sending you notifications.
If you're in two minds on whether you want the notifications or not, we'd recommend choosing the 'remove' option. 'Edit' allows you to change the name of the website (we wouldn't recommend this for most people) while 'Remove' will stop notifications but you may be asked if you want them again the next time you visit that website. If you choose to block them, you won't be asked by that website to activate notifications whenever you next visit.
