I'm having trouble on how fast the tab is - its beat. Like in music sheets, you normally see notes there - whole notes=4beats, half note=2 beats, quarter notes=1 beat and so on. How long exactly a note lasts..that's my problem. If anyone could help me with this, I'd gladly appreciate it.
That's something that normal tablature notation doesn't include. You'll have to use your ears, or otherwise get a Guitar Pro or Powertab for the song.
Thanks oh and what is a powertab? I'm still a novice
Power tab is a tablature program like Guitar Pro, but is of inferior quality. There's a program called TuxGuitar that is free and can open both GuitarPro and Power tabs, so you can get that if you want a free app and you're hell-bent on learning the exact note durations.