So, I don't really know all that much about mountain bikes and how to fix them up. I just started riding my bike a lot. I got a nail puntured through my rear tire...went in through the tread and out the sidewall. I've got 26" Tioga Psycho II tires and was wondering if (this may sound dumb) they use an inner tube (I'm assuming they do), and if so, once I replace the innertube, can I still use the tire itself, or is its days numbered??

Thanks in advance...I know it's a dumb question but your help is greatly appreciated