[Closed] Web Things - RSS Feeds / Google Alert advice

After some help from the web wizards on here - this might be a simple question but I'm stumped!

There are a couple of websites I follow that don't offer RSS feeds and I want to create my own to add them to my RSS reader (use shrook at the moment) but I'm lost as to how I'd go about creating the feed / link / whatever the correct term is.

I'm not eve sure if RSS feeds are that popular nowadays - and I've seen some web articles mentioning setting up custom alerts on google alerts (I've never done before so not sure if this is a good option or not?) in place of RSS.

Has anyone suggestions as the best way to go about setting it up?