Short answer: Use Kdenlive. It’s free, and it’s what the sermon editing instructions use.

To install a program from this page on Windows, see How to Install a Program.

Officially Supported

Kdenlive

Pros:

• Free
• Feature set comparable to expensive commercial software

Cons:

• Some learning curve

How to install:

• Windows:

  winget install -e --id KDE.Kdenlive

• Linux:

  flatpak install flathub org.kde.kdenlive

DaVinci Resolve

Pros:

• Free
• Industry standard

Cons:

• Download requires registration
• The free version on Linux can’t open common video and audio formats (H.264/H.265, AAC), which makes it impractical

How to install:

• Windows: Official website
• Linux: Not recommended