Phase 1: Research, Vision and Design Brief
Depending on the depth of research and the size of the company. It is the most crucial part of the process.
Phase 2: Logo, Identity and Guidelines
Designers generally start by sketching out dozens of ideas on paper. The process of getting concepts down on paper can unlock new directions and solutions. After selecting the the best concepts then you should start creating them digitally.
Phase 3: Monitoring and Rebranding
This website has lots of useful links and imagery that explains the process of creating a visual identity.