what board to pick

hey guys i am doing a little project where my sensors displays and out put to a oled display and log and with a peak warning system i am new to all this and have a rough idea what i am doing but can some one put me onto a board i should be using?

How many sensors you are using? What kind of OLED display you are using (serial or parallel)? In sum, how many inputs and output do you need?

The Arduino Uno is the most common Arduino board and the easiest to start with.
Do you want to log it to EEPROM (that is easy, the Arduino Uno has EEPROM) or to an SD memory card ?