As a caregiver, are there specific tax forms or documents I need to fill out to make sure I'm compliant and getting all the benefits?

Tax season coming up and I'm realizing I have no clue how being a caregiver affects my taxes. I've been taking care of Mom full-time for the past year and I know there are supposed to be some benefits, but the whole thing is confusing as heck. Are there special forms I need to fill out and how do I prove I'm a caregiver? I don't want to miss out on any deductions or credits, but I also don't want to mess up and get in trouble with the IRS.