I'm trying to analyze an FM transmitter circuit, but it has a 2N3904 circuit. I have just basic circuit analysis tools; how could I get a circuit that does similar things to this transistor using just L's, R's, C's and sources? I know I could apply the hybrid-\$\pi\$ model, but I don't know how to get the parameters. Is not for practical purposes, so I don't care about power and frequencies concerns.
One on-line source and many others have information on the 2N3904 transistor. The one I linked gives pretty good parameters for 2N3904 Hybrid -Pi model.
If you have a spice simulator, try looking for a Spice model for 2N3904.