
Joseph H. answered 05/10/22
Guitar/Music Theory/Songwriting Instructor - Adult any level
If you have little music theory experience, stick with one key, probably C on piano or G on guitar and adapt what you are singing to that key. G is good on guitar because it allows you to utilize the G-A-B-C-D-E-F#-G notes around the bottom three strings within the first three frets as the "singing" notes (easy to learn these). This is a typical singing range. Literally, in G, you only need to know the chords G, C, D and Em (maybe Am) to get off to a good start. Match the notes you are singing on the guitar and play chords that include them. It certainly would help to know a bit about chord building, voice leading, and cadences here because just singing a G note doesn't mean play a G chord. The G note is in the G chord, C chord, and Em chord so it depends on where we are in the progression (more importantly, where we came from and where we are going). Typically (in the key of G), start on G chord and end the G or C chord, so a typical sequence would be G-C-D-G or G-D-C-G or G-D-Em-C. Something like that. When you get to the chorus, go for starting with the C or Em. You only need a verse progression and a chorus progression. Then just do V-V-C-V-C-C and you have a song. Want to sing higher or lower/change key? Use a capo. This is oversimplified but people have made careers off little more (ask Ed Sheeran).