Having purchased my first decent scope with Nexstar only two days ago, I have been and still am going through exactly the same 'process' as mentioned both here and in the original post. Many thanks for providing this info and in particular for redirecting to the correct Blog link as that was initially frustrating when the originals didn't work! I wonder if, as this appears to be perennial problem that new purchasers seem to go through, could this 'guide' or something like it be provided as a more general link from the home pages, rather than happening across it on forum searches? Just a thought?
once again, many thanks to Matsey and all of the other respondents...