welcome to steemit, your introduction post is well written with self intro, follow by your interest and your job.
Well done, there are many thing you need to learn as a newbie. For your information, you are allowed to use up to 5 tag which should be relevant to your article in the post. You still can edit the tag ( and the article) after you have published the post except for the first tag.
Don't hesitate top ask around. steemians are very friendly
Cheers