When creating a post, you can select its format, to do this, select the following select input:

You can choose 8 different post formats:
- Aside
- Gallery
- Link
- Image
- Quote
- Standard
- Video
- Audio
For most post formats there are individual settings, for example for video post format you can choose 3 types of video (vimeo, YouTube and html), for a link post format you can specify a third-party link and so on:

