Welcome to Steem @ricamorim0.
Do read A thumb rule for steemit minnows - 50:100:200:25 for starter tips.
Spend time reading Steem Blue Paper to know how Steem blockchain works and if you still have any queries ask them on our Ask me anything about Steemit post and we will try to answer that.
All the Best!!!
I look forward to seeing your photography and your posts! Photos do really well on here so just keep at it and you should do well!
Post consistently, follow those with fairly large SP (That little number to the right of your name) and make sure to interact like crazy!! Leave lots of comments and you will see your SP grow! You will love it here! Welcome!
Thanks @bethwheatcraft for the suggestions, and the posts will not take long to leave :P since I already have some here almost ready :)