XSEDE capacity systems have traditionally provided batch access to large scale computing systems, meeting the high-performance computing (HPC) needs of domain scientists across numerous disciplines. New usage patterns have emerged in research computing that depend on the availability of custom services such as notebooks, databases, elastic software stacks, and science gateways alongside traditional batch HPC. Anvil, an XSEDE capacity system being deployed at Purdue University, integrates a high capacity, high performance computing cluster with a comprehensive ecosystem of software, access interfaces, programming environments, and composable services to form a seamless environment able to support a broad range of science and engineering applications. In this introductory-level tutorial, participants will get hands-on experience with interactive scientific computing using Anvil’s Thinlinc remote desktop and Open OnDemand (OOD) services as well as the Anvil Composable Platform, a service providing web-based access to a Kubernetes-based private cloud.