Cloudflare Worker has become the go to platform for me when I want to spin up Serverless functions. It is fast and simple to deploy and they have a very generous free tier for all of your hacking projects. First 100,000 requests each day are free and paid plans start at just $5 per 10 million requests. So, Cloudflare can handle a lot of things for you.
They just announced a ton of new features.
They revamp their documents page. This is a great place to start and they even expanded their tutorial section that have a lot of great real world examples.
Also, Cloudflare now has a deploy to workers button. Now, it is just a few clicks to get some open source projects into your account and up running. The deploy button uses Github Actions.
Here are a few boilerplate projects that Cloudflare has allow you to deploy quickly.