This document provides an overview of the RINASim simulation tool. It begins with an introduction and agenda, then covers installing and setting up RINASim in OMNeT++. It provides details on the key components of RINASim, including the Computation Systems, DAF components like Application Process and Application Entity, and DIF components like Flow Allocator and Routing. It concludes with an overview of an interactive demo that shows how IPC works between two hosts interconnected by a switch node.