You should probably start with your local Veteran Services Office, local VFW, or DAV office. AMVETS can probably help too but I don't have any experience with them. Which ever one you decide to go to, just tell them you want to look into a VA disability claim. As Don said above, VSO is paid to help you through the process. If you watch those Combat Craig videos I referenced above, they will give you an idea of what you need and what you can seek a claim for, but definitely have someone like your local VSO file the paperwork for you so nothing gets missed. If you miss one little thing they will deny your claim and you will have to start over. There are others than the Combat Craig on Youtube, but I thought they were too much legal speak and repetitive, but that's just me. If you go to Youtube and search "VA disability" you will have tons to choose from, but like I said, just use them for reference.