Design an improved onboarding experience for a new user

Description

This is the first screen a GitLab.com user sees upon signing in to the site, until they create a project:

This view has a few missed opportunities. It doesn't help them:

• Get introduced to the product in an interactive way. We link to the docs, but we could do quite a bit more.
• Invest in the platform, aside from suggestions to create a project (good) or an empty group (not quite as good).
• Feel good about being a part of GitLab. We should make this screen a welcoming experience.
  • Introduce the user to our open core model, how they can contribute.

At some point, we should also consider a different experience for different user types (an admin, a GitLab.com user, CE vs. EE, someone on Gold/Ultimate vs. Free/Core). We should deepen the experience in line with onboarding users into the different stages of I2P.

Proposal

• Make the first screen a welcoming, celebratory experience that encourages the user to take a critical action (create/import a project, or explore GitLab features).
• Introduce the user to the high-level stages of GitLab's I2P workflow, and give them the ability to explore.
  • One possibility is creating a dummy project, seeded with examples.