Before you do anything, install the Vision-plugin. Seriously.
Pick a front-end technology
There is no "right" technology to use for presenting your Sanity content to end-users. Sanity is designed to deliver your content in a presentation-independent format to whatever machinery you apply.
Use one of our growing number of ready-to-go example front-ends to jump start development. They are all built to present our standard example movie database, but are designed to be easily changed into whatever front end you require. This is our current offering:
If you want to use a different JS or PHP framework, you should probably check out our client libraries:
Don't forget to open your project to api-calls from your new front-end.