People using screen readers 'scan' pages similarly to sighted users. That means that it's frustrating if a lot of links begin with the same word or phrase.
For example
- How to find databases
- How to find e-books
- How to find theses
This might conflict with advice (for sighted readers) about using questions as meaningful headings for content. A possible compromise is to begin a sentence with a keyword followed by a question, e.g.