1) Create a time plan
First thing first - make a plan! What do you need to do first? What are the next steps? Try being as concrete as possible. Envisioning the concrete steps is an important part of the process. Planning research and design activities does not mean they will take place the way we envisioned them - but it makes it possible to talk about them and understand better, what is necessary to do.
2) Establish documenting practices
I usually recommend starting two documentation tools - your Project and Reading journal. In your Project journal you should collect all the thoughts, ideas and decisions that you make during the project. This document can also serve as a place to practice writing on a regular basis. In your Reading journal you can collect all the relevant readings you have done and related notes. It does not matter which format or tool you will use - at the beginning, test out different approaches, but then stick to one through out the project.
3) What will you focus on?
Start developing ideas what you want to focus on.
4) Divide roles
Once the plan is established, start dividing the different roles.