OK, Jenny, here we go. . . .
One
If you’re near an Apple Store it would be a really good thing if you signed up for their one-to-one program (apple.com/retail/onetoone/). It’s $99 for a year of training at your pace. My cousin, Barbara, signed-up for it when she got her new laptop (decades-long PC person) and it has made a world of difference.
Two
The best way to bring over all your old stuff to your new laptop is to use the Migration Assistant. You’ll need a firewire cable to connect your two laptops or both laptops will have to be on the same network. When you run the Migration Assistant on your new laptop (It’s in the Applications/Utilities folder), it’ll tell you what to do. OR, you can take both laptops into an Apple Store and they’ll help you move things from one to the other laptop.
Three
Plug your thumb-drive (My-Thumb) into your old laptop.
Start Scrivener.
Select Scrivener/Preferences in the menubar. Scan down to the bottom of the window. There’s a Manage popup menu; click it and choose Save Preferences. If you don’t see a regular Save Dialog, click the down-pointing blue triangle at the far-right of the Save As: line. Navigate to My-Thumb and click Save.
Quit Scrivener and click somewhere on the desktop.
Your new laptop doesn’t have Garamond because it is not part of the standard system font installation. You got it from somewhere else.
Get a new Finder window (Cmd-N), Click on Your-Hard-Drive (probably Macintosh HD) in the sidebar at the left of the window. Open Library; then, open Fonts. Shift-click on all the files that have Garamond in their names. Drag them to My-Thumb. If you don’t see any files in this first Library, try your-home-folder/Library/Fonts.
Drag My-Thumb to the Eject icon in the dock.
Pull out My-Thumb and plug it into your new laptop.
Start Scrivener.
Select Scrivener/Preferences in the menubar. Click on the Manage popup menu and select Load Preferences. Navigate to My-Thumb and open “ScrivenerPreferences” (or whatever you named it). You’ve now loaded your old preferences.
Quit Scrivener.
Open My-Thumb.
Select all the Garamond files and drag them into Macintosh HD/Library/Fonts.
Restart your new laptop and go get some coffee or tea or other restorative.
Got all that?

Dave