The Twilio + Salesforce contest offers a chance for developers to win prizes by building an app that integrates with the two platforms. The deadline to enter is December 12th, and winners will receive a Graphite Kindle 3G, a $50 Amazon gift card, and $100 in Twilio credit. This contest aims to encourage creativity and innovation among developers using Twilio's Cloud Communications APIs. Developers can find helpful resources on the Twilio website, including API reference documentation, SDKs, sample apps, and tutorials, to get started with building their app.