For what do you need more sounds? With cubase artist you have more sounds you‘ll ever use! If you can define a special sound you won’t find in the artist plugins, you can buy a specific plugin for that. But for a newbie I would suggest make music with the tools you have. I‘ll guess you‘ll find 98% of the sounds you need in the stock plugins in cubase.

Watch this: https://youtu.be/MpWcvGuPl3E?feature=shared

There is a key command for every track version function in cubase. So the scratch pad could not be faster than this. I prefer to have my alternative ideas right in place so that I can switch between original and alternative version. With track versions you can handle an alternative chorus idea, just for the drum tracks or for all tracks if you use track version id‘s. So I still couldn’t imagine any advantage for the scratch pad.

You must contact the seller and ask him to transfer the license to your steinberg account.

So what is the advantage of the scratch pad against Cubase‘s track versions? The scratch pad is just a section at the end of a song, to test some ideas. You must copy the parts into place if you want to use them, right? With track version you can create as much new sections as you want right in place!