There is nothing in the example but basic motion graphic animation. Let me break it down and make some suggestions:
- The entire title effect contains a Text layer at an angle and a few animated lines. There are three animated elements, text, the larger circle, and the small animated arrow and small x.
- There is a text animation preset included in After Effects that fades text on one letter at a time. The text element can be a single text layer that has been rotated then the Fade In by character animation preset added and the timing set.
- The animated lines are just a graphic element revealed by an animated matte. All of the lines have a hand-drawn look that would be very easy to achieve in Adobe Illustrator. The line around the text layer is the second animated element in the scene, then just before the shorter line with the arrowhead and the "x" is revealed. Because of the tapered nature of the lines, the easiest way to set up the artwork would be to create an Illustrator document with a placeholder text layer at an angle on the bottom layer, the curved line around the text would be easy to draw with the pen tool using a custom brush. That would be the second layer. The next layer would contain both the line with the arrowhead and the x. In the example, the elements are just revealed from right to left, not individually drawn on.
Inside After Effects the easiest way to reveal the hand-drawn lines would be to create a shape layer just above each line with a stroked path to be used as a track matte. The easiest way to animate the track matte would be to apply Trim Paths to the shape layers. You could create those paths inside Illustrator by placing a simple stroked line on a layer above the second and third layer, import the graphic as a composition, convert the simple (no brush effect) now third and fifth (top) layers to shape layers, and then add Trim Paths to the new shape layers, delete the original simple paths you converted to shape layers, then set up the track mattes. The hand-drawn lines are pretty simple so I would probably just use the pen tool in After Effects to draw a couple of simple paths just above the two layers you created in Illustrator. The last step would be to just adjust the timing of the animation.
These are all really basic skills you should have. I would choose to create the artwork in Illustrator because it is extremely difficult to create the tapered and variable opacity lines in the example entirely in After Effects. I would also use trim paths rather than write on or animating a stroked mask path in AE because write on is difficult to control unless you are good with a stylus and a graphics tablet and adding a shape layer with a mask, adding the stroke effect, then animating the stroke is more work than just grabbing the pen tool and adding the trim paths animator.
The AI file would look like this:
The After Effects project would look like this:
The next step would be to open the Essential Graphis Panel and create then save a Motion Graphics Template you could use in Adobe Premiere or render a movie using the Render Cue and the Lossless With Alpha template in the Output Module so you could have a file to use as an overlay in an NLE. You would never want to edit something like the sample video in After Effects. You would only want to use AE to create the motion graphics.
Since you did not know how to do this I would suggest that you start here to learn how to use After Effects: Basic AE. It's not an app you can just open and poke around in with success.