temperature controller with pt100 for 0 to 300 degres cilcius

hi, I wish to make a controler with pt100, but I have no idea for connecte it with arduino carte, anyone can help me?

Probably best to use a chip dedicated to converting the measurement to digital, like the Maxim MAX31865.

but common practice is to use an amplifier like here

http://openenergymonitor.org/emon/buildingblocks/rtd-temperature-sensing