Hello,
I'd like to humbly introduce myself as a complete novice but a complete fan of air rifles as I'd always wanted one but do to economics, I couldn't purchase one. I'm in LA, Calif, USA and never had one until someone gave me a Gamo Varmint break barrel air rifle as a gift. I received it with no scope at all, as it is used but would like a quality scope for it. I have an over population of pigeons on power lines but would also like to just have some fun with targets. It has no sights so a nice scope seems to me my first order of business. Any and all guidance or links is appreciated. Where do I start?

Cheers,
Robert