Welcome to the forum! There are a lot of great people here willing to lend a hand anytime. Often using the Advanced Search box (at the top of every page) will lead you to the answers you're looking for. If not, feel free to post a question in the appropriate area.
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Regarding your question...have you set up iCloud yet? If you're taking about missing the "+" button in Contacts, once you set up iCloud that should return.