Using this app you can search for a song that you want to learn to play on guitar or ukulele by various criteria such as genre, capo/no capo, no bar chords, 2 chord songs, 3 chord songs and easy songs. You can get inspiration from a list of recently added songs as well as the featured songs.
Once you have found a song that you want to play along to, you can view a karaoke-style play-along video with scrolling chords and lyrics on Youtube.