This section captures the basic ways in which a user would want to participate in the Ethereum project. First of all, to become a node in the network, you need to run an Ethereum client. Multiple implementations are listed in the section sec:clients which also gives you advice as to which clients to choose in various setups. sec:connecting-to-the-network gives you basic information about networks, connectivity troubleshooting and blockchain synchronization. Advanced network topics like setting up private chains is found in test-networks.