There are 6 Post Format Types:
- Standard - This is Core WordPress post Type
- Video - This option will help you embedding videos from Youtube and Vimeo.
- Audio - Custom sound such as Soundcloud embed able sounds and also custom uploadable songs.
- Status - This option will display Twitter and Instagram. Only insert the url of your status.
- Gallery - Inserting Gallery images
- Quote - Inserting quotes easiest way.
- Link - Inserting simple link post option.
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There is no widget. You should add your widgets into Features Sidebar sidebar area on Appearance => Widgets of your dashboard.