#1
Hi All,

is there any software you can get (preferably free), where I can get an MP3 for example, and have that be changed into tabbed music
#2
unfortunately your "brain" is likely the only development in this area at present.
#3
That would be nice
But not that I know of.

I think there is a program that will tell you what key it is in, but I don't know anything about it.

If you want to learn to play a song, you could always request it on the forum.

My recommendation is to figure it out for you're self. Play the song and your guitar at the same time. Guess and check at different notes until you hit one that goes with the song. If you have any kind of ear training, you should be able to work it out from there. Its tough but the more songs you work out, the easier it will become.