Hi Sarah, welcome to Steemit. Probably you have a lot of questions about it and the easiest way to get proper answer is from reading the Official website FAQ (https://steemit.com/faq.html).

There a lot of potential of this blogging platform. Do checkout their 3rd party D.Tube & D.Live for videos.

This Steemit valentine's video dedicated to you:
https://steemit.com/teamalaysia/@legendchew/snqtkdg9

Happy Steemit Valentine's Day!

Have fun exploring and posting your experiences in Steemit. Cheers!