Determine 1-2 tutorials per user persona and validate

[zephyrie]

Is your feature request related to a problem? Please describe. To simplify the getting started experience, we need to pick a few tutorials that can strongly represent a great getting started experience. We'll need to consider MONAI Label + MONAI Core.

Describe the solution you'd like After a few notebooks are validated, we'll update the page to simplify the experience per product and validate each notebook to make sure enough information is available for a good experience.