so earlier today one of my investments enterprise products (epd) sent me a tax package that includes a k-1 form (no idea what that is) and says i also have to go to the website to get something called a k-3. im not sure what either of those are as ive never gotten this b4 so if someone could explain what i have to do that'd be great. do i just file it with the rest of my taxes? also, if i have the k-1 do i acutally need to get the k-3 from the website? my dad usually helps with my taxes so id like to know this sooner rather than later