EDSMITH

I've got a Celestron PS1000 and although I have had it over 2 years I haven't used it. I don't know how to set it up. All I have done so far is levelled the tripod and screwed the telescope onto it. Other than that, I have no idea what bit to twiddle or move next. Can anyone help please? I live in the UK. I tried watching a video of a different make of telescope but it wasn't basic enough. I do not have a smart phone, we don't get a mobile signal. I don't understand how you can set up the finderscope (picture is upside down) by setting the cross hairs on something as far away as possible, but then look through the eyepiece on the side viewfinder thing to look at the same thing...the first one obviously then moves.