A challenge with online tuition is that your teacher can't help you tune your cello. But that means you'll learn to do it yourself!

The pitch we conventionally use for tuning is A440. It's a specific frequency of the tone 'A', which is our highest string.

Use a tuning fork, a tuner, or a piano (preferably also in tune!) to adjust your A string. From there you move on to the D string, the G string, and the C string, using one of the methods I describe in the video.

Here you can download a summary of these introductory videos.

And here you can download an illustration of the anatomy of the cello.