"Getting started" can refer to initiating an activity, project, or process. Whether you're "siting" or "sitting" depends on the context. "Siting" typically refers to the act of determining the location or placement of something, such as a building, monument, or infrastructure project. For example, if you're getting started on a construction project, you might be "siting" the building by selecting the best location for it. On the other hand, "sitting" usually refers to being in a seated position. So, if you're getting started on a meditation practice, you might be "sitting" down in a comfortable position to begin. Both actions
siting or sitting involve starting something new, but the specific verb used depends on the nature of the activity.