Hello,
What I'm using now is Joyoshare Media Cutter. This is a simple video cutter and editor, easy to operate and very suitable for beginners like me. The most important part is that I can easily cut the videos, remove the unwanted parts, merge the video clips, etc. without quality loss. Besides, I can also adjust the video's brightness, contrast, saturation and hue, add some watermarks, subtiles, background music files, apply special effects, etc. So far still happy with it.