'Frogs' by Alice In Chains - Guitar Tutorial

            Eb tuning: down half a step.

Main riff:
[e:---------------------------------------- 
 B:----------------------------------------]
[G:----------------------------------------] played over and
[D:------5------5------5------5----5----5--] over...
[A:----4------4------4------4--------------
E:--0------0------0------0------4----3----]

Verse:
While one of the guitars continues playing the main riff, the
other one plays this:
[e:---------------------------------------
B:---------------5--------7-------(7)----
G:----6b-r-b----------------5------------ } X4
D:---------------------------------------
A:---------------------------------------
E:--0---------0-----0----------0---------]
   what   does friend mean to  you...

At the end of the verse it changes to this:
[e:----------------------------------------------------
B:----------------------------------------------------
G:----------------------------------------------------
D:------5-----5-----5-----5-----5-----5-----5-----5---
A:----5-----4-----5-----4-----5-----4-----5-----4-----
E:--3-----3-----3-----3-----3-----3-----3-----3-------]

Then go back to the main riff and then comes the second verse
which is identical to the first.

Chorus:
   G#5     A#5 C
[e:-----------------0--0-0-0-0--
B:-----------------1--1-1-1-1--
G:-----------------0--0-0-0-0--
D:--6-6-6-6-6--8---2--2-2-2-2--
A:--6-6-6-6-6--8---3--3-3-3-3--
E:--4-4-4-4-4--6---0--0-0-0-0--

   G#5     A#5 C
e:------------------0--0-0-0-0--
B:------------------1--1-1-1-1--
G:------------------0--0-0-0-0-- } X6
D:--6-6-6-6-6---8---2--2-2-2-2--
A:--6-6-6-6-6---8---3--3-3-3-3--
E:--4-4-4-4-4---6---0--0-0-0-0--]
  why's it got to be this way...

The chorus ends like this:
   G#5     A#5 Bm
[e:-----------------2---
B:-----------------3---
G:-----------------4---
D:--6-6-6-6-6--8---4---
A:--6-6-6-6-6--8---2---
E:--4-4-4-4-4--6-------]

After a couple of times, guitar two plays something like this
(I'm not too sure about this part, i've listened and relistened
to the cd but i just can't seem to really get it). But it's
close enough.

[e:-------------3------9b-r-9-7---------7----
B:-----------3---3-------------7-----7---7--
G:------5-3---------------------------------
D:----5-------------------------------------
A:--3---------------------------------------
E:------------------------------------------

e:-------------3------9b-r--7--9b--
B:-----------3---3-----------------
G:------5-3------------------------
D:----5----------------------------
A:--3------------------------------
E:---------------------------------]

Verse.
Chorus.

Then comes this weird part where layne starts talking.
One of the guitars keeps on playing the main riff and the
second one just fiddles around with the harmonics on the 12th
and 15th fret i think...