I need some help.

So, I don't know who to ask, but I'm trying to figure out how to properly download my dlc unlocker. I'm not the most tech savvy person, so all of the instructions are confusing to me. any kind of help would be totally appreciated...and if this gets be banned from this subreddit, I'm sorry. I don't know what else to do. i feel like a chicken with my head cut off...