What aspect of this are you trying to learn?
Most of this looks like relatively simple animation to me, with just some position and scale keyframes for the most part.
It is well timed out, so that is really just about going through it in close detail with the audio to make sure everything flows well.
And then a few final details, like scale squishing & squashing to really sell the movements.
But that's not really a matter of just taking the time to make it nice.
The techniques are very basic but about finessing with the graph editor.
If that still feels out of your comfort zone, maybe try looking up some tuts about the after effects graph editor, and basic animation fundamentals.
perhaps the design is whats holding you back. and that is the trickier thing as there aren't a lot of tutorials for making type better.
Or picking good color palettes. or developing ideas visually.
(actually, Carey Smith has made some AMAZING ones about visual thinking that I highly recommend - http://www.division05.com/)
go look at some illustration tutorials perhaps. von glitschka does some good ones.
or go on behance and pick something with a style you like and try to re-create it.