Depending on your device, there are different places to create a post
1. To create a post, you have to be in the community that you want to post in. Once you are inside that community, on the bottom
1. When you have tapped on the "Communities" tab and you see a list of communities, in the top, right hand corner there will be a pencil and paper icon. Tap on that icon and you can create a post, and assign it to a community without even having to enter.
2. Inside the community, at the top, right hand corner the pen and paper will still be there for you to create a post. There is also a space at the top of the community that looks like a status update, you can also create a post here.