The document provides guidance on planning projects using the Oracle Unified Method (OUM), an iterative and incremental approach. It recommends using a layered planning approach with an implementation plan that outlines the overall project roadmap at a high level, and iteration plans that define the objectives and tasks for individual iterations. The key aspects of planning covered include compiling the implementation plan, determining the number of iterations, iteration planning activities like establishing objectives and deliverables, assigning resources and estimating, and identifying dependencies. The guidance emphasizes that planning is an ongoing process and plans will need to evolve as the project progresses through iterations.