#1
Hi, could someone explain to me how to read tabs. Ill explain what I don't understand.. When you have something like this

|----3-----------------------|
|----3-----------------------|
|----3-----------------------|
|-----------------------------|
|-----------------------------|
|-----------------------------|

The number three means the third fret of that string right? So when you get more than one like I just showed you, does that mean you play the 3rd fret on the shown strings at the same time? I hope that made snese
#3
Correct. In this case you would be playing the high e, b, and g strings simultaneously, either by strumming, or plucking all three together with separate fingers