Hey Joke, " working on Mash and thinking I'm absolutely untalented", Amen to that brother.
I've got "Kiss Me" @ 75-80%,
"Starry Night" @ 50% (that may be optimistic

)
and I just started "Can't find my way home" tonight, have 3 bars memorized in slow, slow motion

It's taking so long to get my fingers and mind to work, I added a couple lessons to the first just to keep things fun and more fresh. I actually feel I'm way over my head but I won't give up. It's been too many years just getting to this point.
I recommend the shorter lessons just so you get some wins under your belt quickly.
I've been dickin with this for about 2 months now and still have'nt got one song sounding good yet. Don't follow the path I took.
Regards,
Mike