What do you plan to do? Usually the way to go nowadays for Wifi is to ditch the original Arduinos completely and use an ESP8266 (I recommend the Wemos D1 Mini). It can be programmed with the Arduino IDE, is much more powerful than the ATMEGA Arduinos und regularly costs less than 5$.
I dont really have any idea of what I will be doing yet
d so its a very basic introductory course ) and one of our projects needs to access/be controlled over the internet in some way. .....................I would prefer to use something that I can integrate with the arduino board.