Trouble with wireless connection Raspberry Pi3

I am trying to setup a raspberry pi for my 3d printer but i am having trouble setting up a network connection. Whenever I plug in ethernet it works fine but I am trying to make it wireless. I am using the lite version of the operating system. When I imaged my pi I made sure to use the correct network info. Every time I sudo ping www.google.com it does not work. How should I troubleshoot my way into fixing this.

sudo ping google.com ? sudo ping 8.8.8.8 ?

Do you see the Pi in the WLAN list in the router?

Do you get a IP ? ip a

No i do not

They both dont work untill i plug in ethernet of course

Indeed

120.0.2.2 if i remember

Post the output from ip a and route -n