i just figured out the intro real quick. it should get you started.
drop D
[ Tab from: https://www.guitartabs.cc/tabs/f/forever_the_sickest_kids/whoa_oh_tab.html ]
e|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|----------------------7-7--------------------------7-7---------------------|
D|-0-5-0-5-7-0-4-5-4-0--x-x-----------7-7-0-4-5-4-0--x-x---------------------|
A|-0-5-0-5-7-0-4-5-4-0--5-5--4-5-4-0--7-7-0-4-5-4-0--5-5--4-5-4-0------------|
E|-0-5-0-5-7-0-4-5-4-0----------------7-7-0-4-5-4-0--------------------------|
|--------------------------------------------------------------------|
|--------------------------------------------------------------------|
|--------------------------------------------------------------------|
|5-7-0-4-5-4-99999999-0-5-0-5-7-0-4-5-4-0----------------------------|
|5-7-0-4-5-4-99999999-0-5-0-5-7-0-4-5-4-0----------------------------|
|5-7-0-4-5-4-99999999-0-5-0-5-7-0-4-5-4-0----------------------------|
