The very same week Fedora 23 is going to be released, the Fedora Project has announced Fedora Developer Portal, a website to help developers working on projects with Fedora as main operating system or inside a virtual machine.
In this new portal they'll find the guidelines to get an install development tools, language runtimes and databases. They will also learn different distribution and deployment options using COPR and OpenShift.
For example, they will find information to install and use Vagrant with libvirt, to start developing with Java, to change from CRuby to JRuby or about the graphical database management tools packaged in Fedora.
This website is hosted on GitHub and contributions from the community are welcome to improve it and keep it updated.