What is the easiest, no-frills way to produce a simple video on Windows 10? This question is basically the same as one I posted 2.5 years ago here, except that now I am using a different laptop that runs Windows 10 instead of Windows 8.

My laptop has a camera. Since it can obviously take video of me (a la Skyping), it should be easy to create a video of myself practicing a presentation.

My laptop runs Windows 10.

This is going to be a long video -- 1.5 hours. What is the easiest way to accomplish that using apps that come with Windows or something free that I can download?
I would look into using OBS (Open Broadcaster Software). It's free, and allows you to capture from a webcam and/or your actual monitors or windows. Many people use it for streaming to sites like Twitch, but it also has built-in options for recording to a file.