leeneia said,"What I am trying to say is, those who think I ought to shop for the perfect capo and master it by Sunday, or that I should master barre chords after failing for 25 years, are not going to get their wish."

There is NO learning curve to using a capo. If you can play the chords WITHOUT a capo, it is even easier to play them WITH a capo. I have a seven year old student who was having difficulties forming chords, so I loaned her my capo, put it on the second fret and she found it much easier to make the chord shapes. The capo means the strings are closer to the frets and the frets are closer to each other. Other than that, you just play the guitar as though there was no capo.