Link text
This one’s pretty simple actually, so there’s not much to say about good practice with link text. However, I do keep seeing it being done wrong, so here’s an outline of the key things to consider.
The first thing to remember is that the link text should “identify the target of each link”. In other words, don’t use text like “click here”. Apart from the implication that the user must use a mouse, imagine what a screen reader user would have read out to them on tabbing from link to link and having the link text of each one read out!