Favorite puzzle solving tutorial or training resource

I plan on developing my tactical puzzle-solving skills exclusively, until I reach my goal of a 2500 rating, hopefully within the next 4-5 months. My current rating is 2002, but I've been scaling like a mountain lion of late (+300 in 2 days)!

Which tutorials and training aides would give me the best shot at this?

Right now I think my biggest handicaps are lack of patience, lack of confidence, the snail-like pace I rarely deviate from since I'm seeing mostly 1800-2200 rated problems now, and my frustration over the fact I almost never get speed bonuses!

Thus far Daniel Naroditsky, Agadmator and Levi Rosen's tutorials, have helped me the most.

Thanks in advance.

okay!

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