posted 2 weeks ago
I see lots of more erudite suggestions than mine, but will put it out there anyway in case music theory is not your forte!
Consider starting a daily practice of 'taking it for a walk'. Tune up. Sit with good posture with the guitar resting on your leg positioned with the goal of not looking at the strings on the neck. With your right hand, pluck the lowest string 'open' (no fingers holding the string on the neck), then with your left hand on the neck use your index on the first fret, middle finger on the second fret, ring finger on the third fret, pinkie on the fourth fret - five notes in succession. Repeat going backward. Move up to the next string and pluck ten times: open, 1st, 2nd, 3rd, 4th, 4th, 3rd, 2nd, 1st, open. Progress up the strings and give your fingers some time to toughen up a little while learning to hear your guitar note by note with increasing dexterity. Think of this as being analogous to touch typing. Not looking at your hands is part of the skill.
When this feels easy, noodle around based on what you've learned to hear or find the note by note music to something lovely like the opening to the Beatles' 'Blackbird' (which is played closer on the neck to the body but uses this skill of making individual clear notes, holding firmly so they ring true). A tutorial will also include learning to slide across notes on the same string. Sometimes it's deliberate and gorgeous, but it's also one of the skills that help experienced players mask a fumble. Oops, wrong note, slide to right note.
This is an alternative start to learning a dozen easy chords and playing the zillion folks songs that use them (which is also perfectly reasonable, especially if what you like best is singing along). If you go that route be sure to include a little practice with finger picking with the right hand. Chord playing gets significantly more interesting when you can strike a corresponding string in the top three while playing third, second, first, second, third on the lowest strings. Most people need quite a bit of practice before doing this with automaticity and it's good for days when the fingers on your left are sore. Watch tutorials for songs like Kansas' Dust in the Wind, Tracy Chapman's 'Fast Car' or the Beatles 'Here Comes the Sun' if this is the sound you like.
Expect good progress if you can get in the habit of sitting down for X minutes daily (ideally stopping before you're in pain and while still having fun) alternating left hand training with right hand training (like a weightlifter having arm days and leg days, haha.) And be sure to have a few songs you love as targets.
Cheering you on from the cheap seats,
Eileen