After install theme, we active HOME DEFAULT as default, if you want to set up another home page. You can go to Customize and click to Theme Actions at top and choose Import Demo.
The popup will show Demo Versions and you need to choose one demo you want to use and click Set Up button.
Note: After installing the demo, you still need config to show product because some section needs product or banner or collections so you need to choose it again.
You can also import-export your config:
If you have another store and want to the user from old from (use same Basel theme), you can copy setting by click Export from the old theme and copy all code, paste to Import from the new theme.