Ws2811 stopwatch help

Hello friends

I am new in world of Arduino so I am decided to start a project what involve an Arduino Uno and a led strip ws 2811. The project i called "7 segment led strip stopwatch" I want to build a Stopwatch what can count until 99,99 seconds and to have 3 buttons, 1 Start, 1 Stop and 1 Reset. I have big difficulties understanding Arduino programing but with help of some friends I manage make some digits move. (see link please)

So, if somebody is willing to help me with my project I will be very happy. I need some start for my project, some code what can help me,some advice, thank you very much.