Video editing is always a challenge for an amateur course creators for many reasons.

1. Cost of the tools.

2. Installation & setup.hazzles

3. Training and effective use of the tools.

4. Wish to have just basic features like trimming, merging, split & insert another clip, Audio, speed, text addion etc.

Now, one can use MS windows 10 built in video editor and there is also you tube editor which can cover most of the nasic video editing like triming, spliting, merging, adding addional texts to your presentation and even additions of 3D images is much easy without much training effort. On the above, its a free tool and does not require any installation as well.