Internal Linking
The algorithms of search engines are very complex, and their programmers have literally thought of every conceivable angle when it comes to searching. When it comes to internal links to other pages on your website, the links have to be relevant to have any effect on rankings. When linking to another page, you should use a related keyword or phrase to the page you’re linking to for premium results. If you link to a page with an unrelated keyword, not only will it have no effect on your ranking, it may also get you penalised for spamming.
Alt Tags
The full name for an alt tag is an “alternative text” tag. This tag is useful in two ways. Firstly it allows broken images to have a short description describing what the image was in case the user has images turned off or the URL to the image is broken. Secondly, it allows search engines to know what the image is. The reason behind this is that search engines can’t see images in the same way that humans do and need a way to interpret them. They rely on the alt tag and surrounding text to understand the image’s contents.
An alt tag looks like this:
A few words in the alt tag should be enough to describe the image, bearing in mind that not all search engines read them yet.
Heading Tags
Heading tags are defined using some very simple HTML code. A H1 tag defines a large heading and a H6 tag defines a small heading.
Example:
The H1 and H2 tags are probably the most important heading tags. A H1 should be used as the primary heading on a web page, and H2s for secondary headings. Where possible you should try to include at least one keyword. Although search engines are starting to ignore heading tags, some search engines do still use them for their original purpose of web page structuring and they are still useful to keep things organised.