Welcome to 50/90 - the marathon of songwriting.
There are lots of good resources on how the challenge and the site works in the FAQ Page:
To make your experience here the best it can be, be sure to also check out the Etiquette page.
Here's some additional tips from previous years:
The 'Compose Tips' page has the text codes for all sorts of fun emojis http://fiftyninety.fawmers.org/filter/tips
To 'tag' someone in this forum type [@username]. The brackets do not show and it turns in to a link when the tagged name matches a registered 50/90 username
If you have helpful advice for folks, please add it here!