I was searching the dApp Decentralized application topic and many resources recommend Ethereum to build a dapp. What I plan to do is to build a decentralized mobile app with a distributed database. I have a Qt/QML code that I like to base my app on it but python/kivy and react native are also options. I have seen Ethereum clients but don't know whether i have to use them to build the network or something else. Please provide some resources (Especially related books) for those who want to build a network on top of Ethereum.