Walters,
it has been a long time since I posted on this forum, and the first time I check in, here you are at it again...LOL, I'm just TEASING you, so don't get upset.
It is my advice that you get an old chart recorder, sometimes called a potentiograph. You might pick an old one up on E-bay or some other way for a reasonable price. This is similar to the type of instruments used for seismographs or cardiographs. It has input connections for transducers or devices that output voltage level signals, and plots the signal on an x-y coordinate axis with a pen. One axis represents time, and is scrolled by a small gear motor, the other axis represents the amplitude of the signal, and is drawn by the pen which is driven by another motor that is controlled by the input signal through a wheatstone bridge circuit. The increase in potential difference between the input signal and the reference signal causes the motor to drive in one direction in a linear fashion, and the motor will ease back as the potential difference returns closer to zero. For lack of a better description, the large potential drives the motor hard in one direction, and the easing of the motor in concert with a counterspring causes the pen to return to zero. In this way, a waveform can be drawn as the chart paper scrolls, creating the time axis.
OK, I doubt you will understand all of that, but that is how a chart recorder works. Your function generator output can be connected to the inputs on the chart recorder, and presto, a waveform will be drawn. This is all basically an analog voltmeter that draws a picture for you. If yoyu take the time to understand what is going on, you'll learn a lot about electronic test instruments in the process.
I will have to ECHO what has been said before. All understanding of waveforms REQUIRES at least a high school level understanding of trigonometry, and a little geometry and algebra doesn't hurt.
YOU CANNOT SUCCEED IN THIS VOCATION WITHOUT IT!!!! IF YOU DON'T WANT TO LEARN THIS STUFF, McDonalds IS ALWAYS TAKING APPLICATIONS.
There, I have given you some invaluable advice, and I did my best to not insult you, because I really believe you are interested in learning. If you have any questions concerning my advice, feel free to ask.