It's very early where @vortac lives, but allow me to try and help. You earn Gridcoin by contributing to scientific research through the BOINC platform. By far the easiest way to get started is joining the Gridcoin pool - GRCPool. There is a ten minute video on that homepage that takes you all the way from a cold start to a fully functioning research set-up that will earn you GRC. The entire process should take you no more than 30 minutes.
The pool has a very active dev, and zero fees bar the network fee when you withdraw your GRC to your private wallet or an exchange (and that is incredibly cheap).
To earn part of @vortac's rain, you need to be doing work through GPUGrid, which is one of the projects you can choose to contribute to. You are perfectly able to earn your share of the rain through the pool.
If you have any more questions, flick them up on here or any GRC social media and we will try our best to help.