Alexa also provides information on audience demographics.
For example if we look up other textbook rental sites,
we can see that some people have completed some level of college
which fits into what we know of the site's offering.
Also most people browse from home or work, but few browse at school.
This might provide insights into the type of content you can create
that will attract these users.
Once again this data is not entirely reliable, but
may lead you in some useful directions.
Alternatively SimilarWeb shows potential topics
visitors to the site may also be interested in.
If we were to start a blog,
some categories we might want to consider would be career related posts,
education related posts, and posts about books and literature.
From the topic cloud presented, we can get a good idea of popular key words used.
SimilarWeb also shows traffic sources,
which can give you a good idea of where and how to promote content.
When looking at channels other than direct or
search, we can see this audience responds to mail well,
which probably means newsletters are an effective medium to reach your audience.