Hiw do I cut a couple of seconds from a clip?

If the seconds that you want to remove are at the beginning or end of the clip, put your cursor on the ending edge and, while pressing down, drag toward the center of the clip. Expand out your time line first, with the slider next to the Settings button above the time line to the right. It makes it much easier to edit.

If the seconds are in the middle of the clip, put your cursor in front of the part that you want to remove, do Modify/Split Clip and trim the edge of the clip as above.

— Rich