How exactly does an Fm transmitter work?

Hi!! I am en electronics student can someone help me out to decipher how does this circuit works?? I mean, how does the oscillator part works to come up with the carrier signal (I guess the oscillator is the 2N3904) and what does the other components do? I also guess that the C1 and R1 are some kind of filter but I'm not sure :/

Lookup Colpitts oscillator to understand the oscillator ...

Colpitts oscillator - Wikipedia, the free encyclopedia

Injecting a small audio signal into the transistor base will shift the oscillation frequency proportional to the audio signal amplitude.

Thanks!! I'm into it and can you tell me what is the purpouse of the capacitors and the resistors in the left side of the circuit?

I've read (Wikipedia) that the frequency of the Colpitts Oscillator is determined by the coil and a capacitor between the collector and the emitter and a capacitor from the emitter to ground, but the circuit I found has no emitter-ground capacitor. Instead, it has a second collector capacitor that goes to ground. Does this mean something ?

R1 and R2 form a voltage divider that defines a bias voltage for the transistor base to ensure the transistor is operating in its active region (partly turned on).

C1 prevents any DC component in the audio signal from altering this bias point while allowing the AC component of the audio signal to pass through and be injected into the base.

I think C2 and C3 help stabilize the voltage at the nodes where each is connected and minimize negative feedback.

R1 and R2 form a voltage divider that defines a bias voltage for the transistor base to ensure the transistor is operating in its active region (partly turned on).

C1 prevents any DC component in the audio signal from altering this bias point while allowing the AC component of the audio signal to pass through and be injected into the base.

I think C2 and C3 help stabilize the voltage at the nodes where each is connected and minimize negative feedback.