Of course Bob is correct, assuming you understood his response. B&W photo paper does not respond to red light, which is why darkroom safelights are usually red lights. Somewhere in your light path you have a red filter which effectively means no light is reaching your paper. The filter can either be above your negative if the enlarger has a filter drawer (my memory is that the Beseler does), or it can be a swing-out filter below the enlarging lens. Whichever it is, find it and get it out of the way. Then your enlarger will work as expected, and the magic Bob mentions will appear as the image emerges in your developer tray.