Good observations so far and I hope you're keeping a notebook!

M13 was my first "searched for it and found it" DSO as well. M57 in Lyra is another nice starter and fairly easy to find thanks to being located between two fairly close, bright stars in the little constellation. It'll be small at lower magnification, possibly looking like an out of focus star, but higher magnification on it should make you happy

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Keep up the reports!