Use the phrase "___ is just beginning to ___" to talk about the early part of something that continues for a long time.

For example, if you're talking about a young child who's learning to talk, you can say:

She's just beginning to form sentences.

You can use this phrase because she's going to continue to talk a lot more after this.

Here's another example for talking about a band that's now quite popular:

I saw them back in '97 when they were just beginning to become well-known.