In almost any opening, there will be plenty to calculate. Unfortunately, most games don't give the potential for daring sacrifices and blazing kingside attacks, but every single opening requires intense calculation if you want to play the best moves.
So more important than playing and learning tactical openings, I would recommend playing and studying classical openings, at least when you're starting out.
Classical openings are
1. e4 e5 and
1. d4 d5. Play these openings for both colors.
1. e4 e5 is called the Open Game because the positions generally become open and require play according to general chess principles. For example, develop, control the center, castle, etc. So playing the English probably isn't the best bet if you are just starting out, but for a totally different reason. The English violates some principles, namely occupying the center, and instead gives white other advantages (usually a good queenside bishop among other things).
The single fastest way to improve tactics is to pick up a good puzzle book and just work through it. If you play super sharp openings like the King's Gambit, that will more help you learn specific opening variations than tactics in general. If you love the King's Gambit, one way to learn tactics might be to look at a dozen grandmaster games featuring the King's Gambit. There will be enough tactics either on the board or hidden in the variations to help you improve your calculation as well as showing you some themes from the opening.