4 steps to create a delightful onboarding experience -
1) Identify your product's value to users
2) Map out the user's journey toward experiencing that value.
3) Identify the obstacles along the way.
4) Address those obstacles using your onboarding experience.
Twitter studied their users' onboarding behavior and discovered that if a new user doesn’t follow at least a handful of other Twitter users immediately upon signing up, they’re much less likely to return in the near future.
Get more from user observations:
As a result, Twitter redesigned their onboarding flow to force users to choose five people to follow. They showed celebrities you're likely familiar with based on the topics (e.g. sports) you indicated you're interested in at the start of onboarding.