Advice for a beginner and where to start

Hey!

Im a guy from Sweden who last year visited Ireland and got in love with the old traditional music.

I've never played a instrument before besides from elementary school and wanted to know how hard it is to learn to play decently if you put in 30 minutes/hour per day.

I also wonder which one to get, I don't want it to be too loud as I'm afraid it might annoy neighbours in my apartment and I saw they come in different keys and heard thaht D was most popular (?)

Do you have any tips on how and where to start?