Equity or Implied odds?

[Panutes]

Hey everyone, I'm new to these forums and pretty to to playing poker in general as well. However, I have taken the liberty to read several books since my start, some of which I have found very helpful with my game.

These books suggest two common methods for determining wether a call is justified in terms of money odds... these being Implied odds or Pot odds. After reading some forum threads here, I have pretty much thrown away the idea of pot odds, and have attempted to just try to understand implied odds, as they seem more applicable.

In spite of this skill, reading updated forum posts here have lead me to believe there is another NEWER and MORE ACCURATE approach known as equity. I have looked at some forum threads explaining this, and the calculations seem too impractical to use at the table. (I play at the casino, rather than online, I prefer to see my opponent's face/body language)

Anyways, I have two questions for you:
1)Which is the better method, or are they used in different scenarios?
2)How are both methods carried out at the table. Basically, can someone direct me to a thread or explain to me themselves a simple method of carrying out these skills on-the-fly at the table for practical use. Without decimal multiplication...

Thanks fellas, I look forward to your feedback.