Ukulele courses that provide detailed instruction from beginner to advanced. Andrew is a great teacher, very clear without meaningless chit chat. Very highly recommended.

Marco is an excellent teacher of both guitar and ukulele. He lives in Italy and has his classes on YouTube. Very clear and makes learning a joy. Very highly recommended. This link goes to one of his classes on Youtube. He  also teaches via  Patreon. 

Another tutorial from Marco, this is an excellent tutorial on a simple yet beautiful finger picking progression.

This is an arrangement that Aldrine played at the Chelteham Uke Fest 4 years ago in Great Britain  ~ a combination of Malaguena and Europa. He also offers tutorials one how to play many songs and is worth a YouTube visit.

Kalei is a remarkable musician. This link goes to one of my favorites of his, "Kiss from a Rose". Once you listen to this you can easily find other great tunes of his on YouTube.

Jake is a wonderful ukulele player based in Hawaii. He has lots of music and teaches an online  course as well.