Google is of course a good source of information. If you're able to "drink from the hose", that is. It's like the "all-seeing, all-knowing trash heap". It gives a lot of answers. Are those good answers? Who knows. Which is why people come here in the hope of getting a "good" answer.
A "good" answer is not necessarily an expert answer. A good answer is one that puts them on the right track.
The problem, if you're a total beginner in a subject area. Is that you don't know the terms to put into Google, in the first place.
E.g. Things I sometimes see on here, but example is made up, rather than an actual poster.
They want a device to make voltages bigger. They don't know that it would be called an amplifier, op-amps are commonly used to make them, and they can be made (with significant difficulty), via discrete transistors.
But A true beginner, might be so vague with their terms, it could confuse google and/or they wouldn't know which answers are correct. E.g. A device which makes small electricity into bigger electricity, suitable for driving a sound making device.
I just tried it, and Google came up with:
https://en.wikipedia.org/wiki/AmplifierBut there are many cases where Google just can't help.
E.g. You want a particular clip type, for fixing a pair of transistors together, and don't know what it is called. But have seen it in some radios. Also why do they clip transistors together like that ?
A beginner might ask. A more experienced person expert might say it is because the old Germanium Transistors, changed their characteristics a lot with temperature, so the clip is to help stabilize the circuit.