PowerPoint presents myriad ways to navigate in a presentation.
In addition to the navigation methods you've probably used (left mouse button to advance, Backspace key to back up, Esc to end), PowerPoint also supports a wide variety of mouse and keyboard shortcuts:
To advance from one slide to another, or perform the next animation on the current slide, you can click the left mouse button—but you can also press Enter, N (for Next), page down, right arrow, down arrow, or the spacebar. You can also right-click the screen during a presentation and choose Next.
To move to the previous slide, or activate the preceding animation on the current slide, you can press Backspace—but you can also ...