In your day-to-day HTML coding you'll undoubtedly use <div> elements, hopefully even <section>, <aside> and <article> tags where more appropriate. You'll describe semantic relationships between headings using <h1> through to <h6>. Your form inputs are probably of the correct type, dictating whether entered data should be a valid email address, or number - but there are loads of obscure HTML tags and attributes which you might not be familiar with. Some are simple, others are still in development and the occasional one is just downright weird! This collection of tutorials and quick tips will get you up to speed with some of the more unusual HTML tags.