Drills to improve poker skills

[Hurt62]

I'm interested in learning some drills that I can do every day to improve my poker skills. I've tried dealing out community boards and figuring out what the nuts, second nuts etc are.

I've heard that Mike Caro published a book a few years back called "12 Days to holdem success" which has some suggested drills. Does anyone know if this book is worth getting?

If anyone could suggest any poker drills that I could do daily I'd be very grateful. <font color="blue"> </font> <font color="blue"> </font> <font color="blue"> </font> <font color="blue"> </font>