Both tabs on here for this song appear to be wrong, so I figured I'd submit my own.

Trampled Underfoot
Led Zeppelin

Intro is on keyboard.

Heres the main riff:

e---------------------------------------------------------------------------|
b-2-2-----------------------------------------------------------------------|
g-2-3--2h3p3----------------------------------------------------------------|
d-------------5p3-----3h5---------------------------------------------------|
a------------------5--------------------------------------------------------|
E---------------------------------------------------------------------------|

And this ascending part:

e----------6-6----------8-8-------------------------------------------------|
b---------------------------------------------------------------------------|
g--5/7---------7/9------------9---------------------------------------------|
d---------------------------------------------------------------------------|
a---------------------------------------------------------------------------|
E---------------------------------------------------------------------------|


And after that this is played:

e--10--10-----------------------------------------------------------------|
b--10--11--11h1211--------------------------------------------------------|
g-------------------12p10---------10h12-----------------------------------|
d---------------------------12--------------------------------------------|
a-------------------------------------------------------------------------|
E-------------------------------------------------------------------------|


And this ascending part:

e----------6-6-------8-8---------10-10------------------13-13---------------|
b---------------------------------------------------------------------------|
g--5/7---------7/9---------9/11--------------12/14---------------14---------|
d---------------------------------------------------------------------------|
a---------------------------------------------------------------------------|
E---------------------------------------------------------------------------|


And the chord before the keyboard solo and at the end of the song:

e---------------------------------------------------------------------------|
b---------------------------------------------------------------------------|
g---7-----------------------------------------------------------------------|
d---5-----------------------------------------------------------------------|
a---------------------------------------------------------------------------|
E---------------------------------------------------------------------------|