An alternative is, read about the following:
1. Ohm's law -- the relationship between voltage, current, and resistance. And power.
2. Learn how to sum resistors in parallel vs resistors in series.
3. Learn about capacitors, how do they charge? (the RC constant). What happens afterwards?
4. Now learn about RC circuits (resistor+capacitor), which means you will learn about filters: low pass, high pass, at the very least. Know how to calculate the 'cutoff' frequency.
5. Learn about how a transistor works. First, how it can be made to work as a switch. Then, how it can be made to work as an amplifier.
6. Learn about the inductor (the "L" in L,R,C). Learn the relationship between inductors, capacitors and resistors.
7. Since now you know about inductors, you can also see Oscillator circuits using transistors.
ALTERNATIVELY
on step 5, instead of learning about transistors, learn about opamps. It is easier to understand than transistors!
Then learn about how to implement oscillators with opamps, filters with opamps.
Afterwards you may perhaps want to learn about digital circuits. If you understand boolean algebra or bit logic functions (and, or, xor, not), then this will be a piece of cake.