Well done and congrats on taking your first steps with inline functions!
If you'd like to learn the basic concepts of C#, I would highly recommend an interactive (free) online tutorial - I very much enjoy the introductions to various languages at W3 Schools because they are a great way to get a leg up in something new before moving onto more in-depth and involved tutorial projects or more advanced learning in that language.
Check out the C# tutorials at W3 Schools here:
w3schools.com/cs/index.phpYou are right that a majority of the focus in the VA Help Manual is on plugins, but programmatically, they are mostly identical but for the use of "vaProxy" in plugins, whereas in an inline function, you'd substitute simply "VA" instead. This is how we access objects exposed to us through our inline functions (or plugins), as you have done above to write to the event log.
You can technically still use the "vaProxy" object in an inline, however, by using "VA" you can access intellisense completions as well as each of the available functions/classes/operations through the dot operator as shown below using the arrow up/down keys to scroll the list: