They should be great to get you started. Firstly you will need something reasonably firm in the way of a tripod to mount them on because the minimum focal length is much too long for hand use. Your maximum FOV will only be about 2 degrees
Don't try to use the maximum zoom till you get used to them. If you have a lap top run Stellarium and see if you can see the same sort of star patterns then pan around till you can find some objects. other than planets and the moon you will be able to see the brighter deep sky objects like M42 and the Magelenic clouds, tuc 47 etc.
With a good stable mount you will be able to zoom in on objects and start to resolve finer detail.
Barry
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