Okay this is my first tab. Enjoi?
Riff 1
e|----------------------|
B|----------------------|
G|------------ 6-4------|
D|---666--66--6-4-------|
A|---666--66--4-2-------|
E|---444--44------------|
Riff 2
B5*
e|-----------------------------|
B|-----------------------------|
G|------ -4------4-------4-----|
D|---66--4--66--4---66--4-6----|
A|---66--2--66--2---66--2-6----|
E|---44-----44------ 44----4---|
*As for the B5 being played that way, it can also be played like this, which might be easier:
e|------|
B|------|
G|------|
D|--9--
A|--9--
E|--7--
Riff 3
e|---------------|
B|---------------|
G|---------------| x2
D|- 8------------|
A|- 8--x32-------|
E|--6------------|