Just bought used nikon d3200. Wont take pictures without sd card.

I bought a used nikon d3200 today. It didn't come with an sd card but it seems to be working except Im not able to take pictures without an sd card in it. Everything else seems fine, I was able to change settings on info and menu to use it manually. It's my 1st dslr camera so I've got plenty to learn from it. So is this normal that Im not able to shoot without a memory card? I just wanna make sure there's nothing wrong with it before spending more $ on a memory card, I just dont know how if I could shoot without it. Couldn't find anything on google about it either. Thanks for any help in advance.

Read more: Just bought used nikon d3200. Wont take pictures without sd card.