Editing Process

Preview Window: You can playback video, or pinch, drag, rotate and interact with the clips directly in side the preview window.
Timeline: You can assemble, arrange, and apply edits to video, audio, overlay, effects, and text tracks.
Main Toolbar: All the tools you need can be found here. The Main Toolbar shows up when there is no clip selected on the timeline.
Sub Toolbar: They are toolbars dedicated for different tracks and clips on the timeline. For instance, there are sub toolbars for videos clips, text, audio, overlays and so on.

After adding videos to the timeline, follow these steps to trim videos in CapCut:

Tap the video clip, you shall see white frames around it.
Tap and hold on the white edge, and drag it to trim the video.
You can also drag the opposite position to retrieve trimmed parts.

When you are trimming videos by dragging the edges, the adjacent clips will move along. In this way, there won't be gaps (and hence black screens) in your project.

If you want to trim out a section in the middle, you need to split the footage, and delete the clip in the middle.

To split a video clip in CapCut, follow these steps:

Tap the video clip to make sure it is selected.
Hit the Split icon at the bottom of CapCut.

By splitting the video, you can perform the following edits:

Add transitions in between after creating the split;
Remove unwanted parts by tapping the split clip, and hit the Delete icon at the bottom of the screen;
Insert new clips in between two video clips.

Resizing videos in CapCut can make your video best fit the social media, and offer better viewing experiences for your followers.

To resize videos in CapCut, follow these steps:

Tap the video clip that you want to change size.
Tap the Format icon at the bottom of the editor.
Choose a different as aspect ratio.

For instance, to best suit my Tiktok videos I will use the 9:16 dimension