Is better you know to use Microsoft PowerPoint; this will make you easier to get job. You even can create a creative and attractive presentation slide to selling yourself during the interview.
Microsoft PowerPoint is not difficult to learn and use. But how to create an effective presentation is another issue. Here get 5 useful Microsoft PowerPoint resources for your reference:
Microsoft PowerPoint Team Blog

An official blog from Microsoft. You can get latest tips, news and announcements from Microsoft.
The PowerPoint Blog

Clean and clear step by step tutorial blog.
PPT – Powerful Presentation Techniques

Useful information and resources about PowerPoint presentation skill.
PowerPoint Ninja

The PowerPoint Ninja Blog covers practical PowerPoint topics, tips, and tricks.
Presentation Zen

Talk all about related professional presentation design. Don’t miss this blog, the article will encourages you to think differently and more creatively about the preparation, design, and delivery of your presentations.