Hello, you can look at this post, it has a lot of information to start learn the gears of it
You can use this tool to start writing and coding and testing your game all in the same place.
If you get an error there’s probably already an answer here on the forum so google and the search bar are your best first step friends.
Start trying and experimenting, is the best way, and also you have all the documentation explaining the commands and their functions on the wiki.