How does tumblr work?

[(:Gillian:)]

Okay .. so ive had tumblr for like 2 days .. adn i have NO clue how it works.. D:
so could someone tell me how to use tumblr? :]

[Toughholiday413]

Tumblr is a micro-blogging service. While it's mostly compared to Twitter, Tumblr has plenty of features to make him stand in the crowd :
Tumblr lets you post updates of any length.
It has built-in templates for: text, photos, videos, audio, quotes, links and chat transcripts.
It lets you customize the look of your blog with thousands of beautiful shared themes in the theme garden.
It lets you set up several blogs, including private ones under a single account.
It's completely free !