Greetings and welcome!
There are lots of friendly folks around here, which makes for quite a pleasant place. Hope you'll enjoy it!
For some tips and tricks, check the "Help" section, and also the forums. My best friend when posting has become the Markdown Formatting Page. It has an organized list of commonly used formatting for posts, journals, links and more. The forums are also full of helpful people and lots of information such as site updates, useful tools, discussions, a marketplace, and areas to request critique.
Hope this helps a bit! :)