Fine? Stay here where there's only Wi-Fi. Otherwise I would have to lay a connection… Is there a possibility to connect the computer with wireless?
Naturally. Either with wireless card or Wi-Fi stick.
Recommend you a wireless card but with Wi-Fi USB stick is also fine
Yes, some PCs already have a motherboard with W-Lan antennas.
For this I would have to know what kind of motherboard you have.
Then there would be retrofit W-Lan cards for PCI-E and there are W-Lan sticks, which I would recommend.
Whether stick or card, the adapter should be 5Ghz, this is just better than 2.4Ghz.
I think a stick even better, because you have a little more freedom when using an extension cable.
Is not quite as stationary tied to this position.