You can try something like this:
<nav>
    <ul>
        <li> <a href="http://www.google.nl/">Menu item 1</a>
        </li>
        <li> <a href="http://www.google.nl/">Menu item 2</a>
        </li>
        <li> <a href="http://www.google.nl/">Menu item 3</a>
        </li>
        <li> <a href="http://www.google.nl/">Menu item 4</a>
        </li>
    </ul>
</nav>
With the CSS of:
nav {
    height: 100px;
    background-color: blue;
}
nav > ul {
    list-style: none;
}
nav > ul > li {
    display: inline;
}
And then style it to your needs.
solved Don’t know where to start with this navigation bar (nav bar) [closed]