Permaculture and Google Earth

I've recently decided to start using Google Earth Pro to work up permaculture site assessment maps. I'm a beginner with the software and am going mad trying to get a clear explanation of how to overlay topographic contour lines on to the satellite image of the property. Would anyone out there be willing to walk me through it sans geek jargon?

I'd like to see this post resurrected.  I'm on a budget so I'm not going to pay for a course.  So far I've marked the perimeters on my 2 acres.  Not sure what to do next.  I have Google Pro on my desktop.  Thanks for any guidance.

I have been using topo maps for years so I feel I am good at reading and understanding them.

This make for using google earth easy for our property.

Now that you have marked the perimeters maybe it is time time mark where the house is?

Maybe mark the other structures.  These can easily be seen though marking help find them.

Have you looked at the contours to find the highest point on the property?  what about the lowest point on the property.

We marked where we dump the deer carcass ... we called The Dump.

What are some of the things you want Google Earth to do for you?

I used Google Earth Pro for making a custom map for a Garmin GPS, showing the boundaries of our property. Basically, you can take any map image (as long as you can have it in JPEG format at least), use Google Earth Pro to "georeference" it (overlay the image on the GE map and tell the app "this is where it is") and then download to your GPS and see where you are on the map. Really useful, although there was a fair bit of frustration until I got the two images lined up as well as I wanted. Here is the instructable on how to do it. I imagine you could take a screenshot of a map of your property, doodle all kinds of permaculture-y things on it, georeference it, feed it to your GPS, go out in your garden and use the GPS to transfer your digital plan to your actual land.

I believe in hand drawing and scaled plans. You need QGis for this. You can print out a scaled plan and go from there.

I'm also interested in learning to make the most of Google Earth.
When my school started using Google Classroom in the fall of 2020, Google had some very good free training (set up so that access to everything was free, but if you wanted a certificate of completion of the training, that's when you had to pay; if you didn't care about papers to prove your knowledge, you never had to pay). I've been snooping around Google Earth trying to see if they have something similar, but with no luck.
How did you learn? By just playing around with it? I feel like I'm getting too old to learn new things that way and I'd like a bit of guidance.
Any youtube tutorials to recommend?
We are laying out water retention features and an irrigation system for our steeply sloping 29-hectare reforestation plot in southern Mexico, where rains come between June and October and hardly ever outside of that.