Except the Tirion charts show some DSOs like galaxies in red! So you can't see them at night under a red torch.
Chris, each chart will show just a portion of the sky. You have a spherical coordinate system with right ascention in hours (0 to 24 corresponding to 0 to 360 degrees around the celestial equator) and declination (-90 to 90 degrees as measured from the cel. equator to cel. poles). The charts should have these marked from which you can figure out how they join up to cover the whole sky.
You cannot have charts that are the "right way up" all the time because the sky is looks different at different times of the year and at different times during the night; e.g., right now, the Southern Cross is "upside down" after sunset but it is the "right way up" by dawn.