Robert, he (and you) should enjoy using that scope. I suggest you get a copy of the book Astronomy 2010 and a large planisphere. Look at the local Astronomy sites to get them.
Beyond that, a stool might be useful to sit on while observing. Also a red light torch so you can see what you are doing (eg. changing eyepieces) without using white light to ruin your night vision. Astronomy shops sell various ones, but check your local supermarket. Everyready (and I think some others now) make headlights with a red light and some white lights. They are useful.
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