very carefully!
How do you play the Kings Gambit?
I'm a pretty low-rated player and play the KG for a couple reasons:
- At my level, a loss of a pawn never decides the game. It's always tactics in the middle game. There is no point in my carefully playing some 9-move variation of the QGD to get to +/= if a couple moves later I or my opponent loses a bishop to a tactic. So other than completely bad or silly openings, "everything is playable".
- The KG (declined or accepted) immediately launches into an open, tactical game. No old stodge games.
Still, ultimately that's what opening manuals consist of.