When you've found a Project you'd like to build, you can upload it to your Origin via ShaperHub.
On the Project Page, Select SYNC TO SHAPER ORIGIN.
This will add all the .SVG files in a project to your Origin in a folder with the same name as the project.
On your Origin, go to Import > ShaperHub > My Origin Files and select the folder to find all the cut files in the project.
Keep in mind that if there non-.SVG files in the project, these will not sync to Origin. But you can always find them in your My Origin Files on your computer or handheld device.