Hello,
you seem to be a new user to openHAB. You should start by reading the documentation and following along a few examples. What you are asking for is easy to achieve (that’s what openHAB is made for) but you’ll have to go at it step by step.
- Integration of Philips Hue lights is done through an add-on. Read up on that.
- Presentation and Control of Switches on the Android app is done by defining a Sitemap in openHAB. Read up on that.
- MQTT is not needed for your simple use case.
A few links:
- http://docs.openhab.org/introduction.html
- http://docs.openhab.org/addons/bindings/hue/readme.html
- http://docs.openhab.org/configuration/sitemaps.html
- A tutorial teaching you how to combine items, rules and a sitemap to get what you want: Speedtest-cli Internet Up-/Downlink Measurement Integration