My dad and uncle ordered the legendary 1998 King Of The Ring. My first major memory was Mankind being tossed off the cage. After that I watched WWF and ECW on occasions, but not as regularly as I would by 2001. My gramps took me to a few wrestling events and started watching WWE full-time since.
As for TNA, I used to read about the cards via my guide and believed it was some sort of team MMA thing due to it listing stuff like "Team Mexico", "Team Russia", "Team 3D" and "Team Canada". Mostly, it was the World X Cup. Then I saw the commercial for Slammiversary: This Is The One (2006) and saw Sting, Christian, Jeff Jarrett, Abyss and a few others and got hooked later on when I learned it aired on Spike from my gramps. My first iMPACT! was the one where Angle headbutted Samoa Joe.
With a video like that, it's no surprised I was baffled by TNA.