How do I add and save scripts to the new version of Studio?

I'm completely lost with this new system. Can someone help me figure out how to add and save scripts to bricks with the new system?

In the Objects Explorer, find "Script" and double-click it. Alternatively, right-click on the object you want to insert a script into, hover over "Insert Basic Objects," and find "Script."

I don't quite know what you mean when you say 'saving.' If you're talking about just saving the script, it does so automatically. All you need to do is save/update your place.