I want to start this playlist
https://www.youtube.com/watch?v=wd9KdsxTVa8&list=PL6gx4Cwl9DGC04FAovs0lswXTPXeomORn&index=1
i download the kali
but on this video he  say that i need a network adapter that i can sniff all the packet on my network(i think the card need to support on monitor mode)
12$ it too expensive for me
how can i check if my adapter card  good for this?
or how can i config my card to fix for this?
i have 
Qualcomm Atheros AR9485WB-EG Wireless Network Adapter
can i configurate it to support on this?
thanks