First Time Project

Hi everyone, having seen this product on the market OLED Based Digital Multi Gauge - Zada Tech

I decided that i wanted to build my own arduino powered gauge for my project car. i wanted it to measure the following; Boost Pressure, Water Temperature, Oil Pressure and Exhaust gas temperature.

But since im very new to this sort of thing i didn't know where to start with this project so looking for some advice on everything really! thanks, Jordan