The intro is double-tracked and played in two octaves.
Its also heavily flanged.  Here's the lower octave:

E|---------------------------------------------------------------------------
B|--3p0-0-3p0-0-3-3^5--3p0-0-3p0-0---------3p0-0-3-3^5-3-0-------------------
G|----------------------------------0-2^4------------------2-0---------------
D|---------------------------------------------------------------------------
A|---------------------------------------------------------------------------
E|---------------------------------------------------------------------------

E|---------------------------------------------------------------------------
B|---------------------------------------------------------------------------
G|-2p1-1-2p1-1-2-2^4^2p1--1--------------------------------------------------
D|------------------------2--------------------------------------------------
A|------------------------2--------------------------------------------------
E|------------------------0--------------------------------------------------

And the intro riff to the lyrics part:

E|---------------------------------------------------------------------------
B|---------------------------------------------------------------------------
G|---------------------------------------------2-----------------------------
D|--2p0-0--------------2-----9\7-7-7\4-4-------2-----------------------------
A|---------2p0-0-------2-----7\5-5-5\2-2-------0-----------------------------
E|----------------3^4--0------------------3^4--------------------------------


And the main rythym:

E|---------------------------------------------------------------------------
B|---------------------------9--9---------------------9-9-9-10-9-10-9--------
G|--7--------7---------------9--9---7------7----------9-9-9-9--9-9--9--------
D|--0--7--7--0--7--7---------9--9---0-7-7--0--7-------9-9-9-11-9-11-9--------
A|-----0--0-----0--0---5--7--7--7-----0-0-----0--10h11-----------------------
E|------------------------0-----0--------------------------------------------

and the ascending chords at the end of each bar(?)

E|---------------------------------------------------------------------------
B|---------------------------------------------------------------------------
G|---------------------------------------------------------------------------
D|--2-2--4-4--5-5--7-7-7-7-7-7-7-7-7-----------------------------------------
A|--2-2--4-4--5-5--7-7-7-7-7-7-7-7-7-----------------------------------------
E|--0-0--2-2--3-3--5-5-5-5-5-5-5-5-5-----------------------------------------

The solo's kind of tough and I really dont remember it.

Heres the ending sequence of the song:

E|---------------------------------------------------------------------------
B|---------------------------------------------------------------------------
G|---------------------------------------------------------------------------
D|-------------------------------------------2-2-2---------------------------
A|-14\12-12-12-12\9-9-9-9-9\7-7-7-7-7\5------2-2-2---------------------------
E|-12\10-10-10-10\7-7-7-7-7\5-5-5-5-5\3-3^4--0-0-0---------------------------

                Nobody's Fault But Mine
                    by Page and Plant
                        Unledded
                   tabbed by Craig Knowles

D|-----------------------------------------------------------------]
A|-----------------------------------------------------------------]
F|-2-2-2-2---2-0-0-0-0----2-2-2-2-------------------------2--------]
C|-2-2-2-2---2------------2-2-2-2------------------2------0---2----]
G|-0-0-0-0---0------------0-0-0-0------------------0--0-3---3-0----]
D|---------3----------------------3--0-----3-2-0-2-------------3-0-]

D|---------]
A|---------]
F|---------]
C|-----2---]
G|-----0---]
D|-0-3-----]