To expand on WE2U's answer, because I'm the one who protected it...
Protection is a minor hurdle added to (usually popular) posts to prevent new users from answering questions with non-answers, like this:
Oh yeah, I have the same issue too! I'm running Ubuntu 16.04 and NVIDIA drivers 123.45! How can I fix this?
As this is a Question/Answer site (see our tour), we don't exactly like these "me-too!" answers. They're not answers, and they definitely don't help anyone.
This site in general works on a privilege model. The more you give to a site (and the more trustworthy you become), the more you can do here. To get over the 10-rep hurdle, you just need to acquire 10 reputation (or 2 upvotes on a question/1 upvote on an answer).
There are, of course, plenty of questions that would love an answer. Find one you like and/or are knowledgeable on, and answer it! Worst case, you get to do some research and learn something in the midst of writing an answer.
As of now, you have 26 reputation, which is enough to post normal answers. You're off to an excellent start, and I look forward to seeing you blossom into a great member of this community. Welcome to Ask Ubuntu, and enjoy your stay!