Even though we have spent ample time exploring Ethereum and Solidity principles in such a way that you should be able to build DApps, this book has its limits and you’ll probably need help at some point.

There is good online documentation covering all aspects of Solidity, which is maybe not up to date but is good to start with. For instance, an excellent in-depth introduction to Solidity can be found in the official documentation at http://solidity.readthedocs.io/en/v0.4.24/solidity-in-depth.html.

Subscribing to and asking questions on Gitter (https://gitter.im/ethereum/solidity/) allows you to communicate with some of the leading figures in the Ethereum community as well as many other talented developers. I should also mention that there is a dedicated Stack Exchange community for Ethereum (https://ethereum.stackexchange.com/), which can provide further help.