Did you read about the trust levels. If you are super new here, you will have limited ability in starting a totally new post, you have to do more than just like a couple of my posts here.
You need to read some other posts. Maybe make comments and likes on them. And you can also use the search magnifying glass at the top of the page to search for a already posted topic similar to your question, and you should be able to post your new question in that thread.
Eventually you will meet enough of the requirements to rise up in trust levels and then you will be able to do things like start your own grow journal or your own new topic thread.