Experimenting and prototyping your onboarding process involves several steps. Firstly, you need to define your goals and metrics; what do you want users to do or feel after completing the process, and how will you measure their success or satisfaction? Then, generate hypotheses based on these goals and metrics. For example, adding a tutorial video may increase user activation, or simplifying the sign-up form may reduce user churn. Design and build prototypes according to your hypotheses. You can use low-fidelity prototypes, such as sketches or wireframes, or high-fidelity prototypes, such as mockups or interactive prototypes. Next, run experiments with a chosen method and sample size. A/B testing, multivariate testing, or user testing can be used depending on objectives and data availability. Finally, analyze and iterate based on the data and feedback from the experiments. Compare the results against your goals and metrics to identify what works and what doesn't. Refine or discard hypotheses accordingly, and repeat the process until you find the optimal onboarding process for your app.