While i am learning languages in the university i should do  some presentations which help us to memorise the new information through visualisation. And here i will recommend you a few best programs to create your presentation. 

1. PowerPoint Online

The online presentation software, PowerPoint Online, includes many (but not all) of the features of its premium counterpart. Format text, use animations, and include other graphic elements. Since it's web-based, there are also collaboration features and cloud storage. Also PowerPoint provides many help documents and articles to its users.

2. Google Slides

Next up on our list of free presentation tools in Google Slides. Even though it's free, Google Slides' features rival those of premium presentation software tools. It's real-time collaboration tools make it ideal for times. Google Slides is also a great option if you intend to publish your presentation online. Plus, even though Google Slides is a cloud-based tool, you can change the settings to use it while you're offline.

3. Keynote 

Keynote is another one of the many free online presentation tools available. If you've purchased a Mac computer lately, it probably came with Apple's Keynotes software already loaded. It's also available to download for free for iOs devices from the iTunes App Store. PC users can now view or edit Keynote presentations online with the iCloud website.

If you've got a Mac, you'll probably find Keynote easy to use. It's well-integrated with the Mac platform, which makes it easy to add images and multimedia into your presentation. A recent upgrade added better collaboration features to Keynote. 

Coming from Apple, Keynote is well-documented. There's good technical support and other resources from both Apple and third parties.

4. Prezi Basic

Prezi is a popular free online presentation tool known for its graphic interface and its non-linear approach to presentations. The zooming tool is impressive. Plus, there are tutorials and other aids to help you learn how to use it. Its popularity is growing, which means there's also a growing number of third-party resources available.

Try Prezi for free by using either the basic version or by signing up for Prezi basic, or for a free trial of one of the other versions. 

5. LinkedIn SlideShare

LinkedIn SlideShare isn't a presentation authoring software tool, but rather a free presentation sharing software tool. But if you need to get your slideshow in front of a large professional audience, then this online presentation software is worth knowing about. Currently, there are millions of users on SlideShare, many of whom are business professionals.

Hope this information will be helpful for you. Good luck!