how to pick right arduino board

i'm looking for a board that will let me, watch two separate temp. sensors, turn on and off three motors, water level, and camera. Be able to hook up to internet for remote viewing. sorry if this is real basic, i'm new to this. thank you

You can set up a Web cam without Ardunio. Any board will handle the data from two temp sensors and turn on and off some motors. If you want the temp sensor data available to the Web as well and you are starting from nothing, probably a Yún.