As for the song, I have no idea. It helps to use adjectives such as, rolling, trill, piercing, whistled, Thin, full, insect-like etc.
If you have a smart phone, download the Merlin bird ID app for free, or buy the Sibley app, or both. Also download the eBird app and use the checklist as an aid in learning what birds are common, infrequent, unreported and rare in your area. That helps a lot. Lastly, the best app for learning bird song in my opinion is Lark Wire, but it is only compatible with iOS, you can use it on a desktop however.
Also Peterson has some good CDs with a narrated guide that explains how to differentiate similar songs.