As mentioned in the course requirements you need an external wireless adapter for the cracking lectures 11 to 28, you can do everything else without one though, just make sure you set Kali to use a Nat Network as shown in lecture 5 and skip the part where I add my external wireless card.The built in card is not good for hacking, you need a powerful card that supports monitor mode and packet injection so please checkout the adapters on the following link, they all support monitor mode and packet injection:

https://www.zsecurity.org/shop​

If you’re not sure which one to get the checkout the adapters video in the resources of lecture 11, here is a link to it anyway:

https://www.youtube.com/watch?v=0lqRZ3MWPXY​​

Please don’t hesitate to contact if you need anything else.