Just recently got a ps3 and rebought skyrim. Started to level up and I thought there was a adventurer skill tree but am I just imagining it

There's a mod on the PC that adds an adventuring skill tree, but not in the vanilla game no

*Rolls a natural 20 to resist making an arrow-to-the-knee joke*

Nope, I think you imagined it. Did you recently play another game that had that as a skill?