Transistors basic question, Voltage is confusing me
They're not dumb questions but the concept isn't too difficult to understand.

A few notes:


The base emitter junction appears as a diode. 
In forward conduction at moderate currents about 0.7 V is dropped across the junction.
The base current rises exponentially with the base-emitter voltage so we need to limit this applied voltage.








simulate this circuit &ndash; Schematic created using CircuitLab

Figure 1. Various NPN transistor arrangements.

In (a) there is no current limiter on the base. We can turn the transistor on by applying about half a volt or more to it but slight variations in voltage will cause large variations in the current through R1. This makes it very difficult to control. If the base voltage rises too much the transistor will be destroyed.

In (b) we have added a current limiting resistor to the base. Now we can apply, for example, 5 V to NODE1 and with a 1k resistor be sure that a maximum of almost 5 mA will flow into the base.

In (c) we can apply a voltage to NODE1 and current will flow into the base turning on the transistor. Current will flow through R3 causing a voltage drop across it and the emitter voltage will rise to about 0.7 V below that of NODE1. 

(a) and (b) are common emitter mode as their emitters are connected to a fixed voltage. (c) is a common collector arrangement and is also called an "emitter follower" as the emitter voltage follows the base voltage (with the 0.7 V drop).

To answer your questions:


  Base being more positive, is it saying that base has more holes?


No. And thinking of holes and electrons doesn't help much. Just think of voltages and currents.


  And what does it mean that base is 0.6 volt more positive?


Explained above.


  It also says: Vb = Ve+Vbe.


It's just saying that when you're calculating voltages at any point in the circuits above you can reckon that the base voltage will be 0.6 or 0.7 V above the emitter voltage (when current is flowing into the base).



Figure 2. Horowitz and Hill, The Art of Electronics. "Transistor Man" looks at the current at the base, and adjust the current at the collector so as to be a multiple of the base current.

The image of Figure 2 may help a little.