Heey Guys! (: I noticed there wasn't a tab for the adorable into to Demi Lovato's World 
Chances and here it is!

Standard Tuning
Open Strings
No Capo/Capo on 3rd fret
______________________________________________________________________________

Without Capo

e|-3--6--13--11--10---8--3--6--13--11--10--18--8|
B|----------------------------------------------|
G|----------------------------------------------|
D|----------------------------------------------|
A|----------------------------------------------|
E|----------------------------------------------|

With Capo on 3rd Fret

e|--0---3---10---8--7---5--0---3-10--8--7--15--5|
B|----------------------------------------------|
G|----------------------------------------------|
D|----------------------------------------------|
A|----------------------------------------------|
E|----------------------------------------------|