Best way to learn/improve in tactics?

Just wondering how I can best improve my tactics. My "regular" rating according to the USCF is 1100, but I haven't played in a tournament in over 3 years. To give you an idea of my current rating, I've beaten people on live chess rated over 1500, and one guy over 1600. I know the ratings on here don't compare with true ratings, but that's the best way to express my current chess status.

Anyway, I plan to get "Learn Chess Tactics" by Nunn. Would anyone recommend it? If so, how should I continue to improve after that? I'm guessing that I should go over loads of tactics puzzles every day?

Thanks for any help.

You can't go wrong by solving tactics puzzles in books, though you might want to be sure you're using a tried and tested book. Haven't read up a review on Nunn's book nor do I own it so can't really make a yes/no recommendation there.

Consider Ray Cheng's Practical Chess Exercises (everything's jumbed up...in a good way! You won't know if there's a tactic or merely a positional break move in the position waiting to be played) or the brilliant Winning Chess Exercises by Coakley.

Though why not consider free options?  The very popular chess tactics server (google for it) is a cruel BUT effective online trainer.  You break a 1600 rating on a server like that and I think you're pretty much set to do some major damage during your OTB games.

Cool.

As well as any tactics books you might read (I've not read the Nunn one and cannot comment on it), I would recommend Chess Tempo. Do at least a handful of those puzzles every day, and (especially at your level) your tactical ability will improve dramatically.

I think a puzzle book (with good reviews) is ideal for deep tactics where you take as much time as you want. Then for shorter but faster tactics (so that in a real game these combinations just jump out at you) I recomend an online tactics trainer, this one is good, but even better I think is chesstempo.com.

There are other ways to improve tactics like studying tactical games, but for purely tactics this seems to be the most efficient, to the point way. But if you have the money buying a puzzle book is helpful. Mine is "The Ultimate Chess Puzzle book" by John Emms.