Expand the About page.

public/default.css

@@ -1,3 +1,7 @@
+div.verbiage {
+    max-width: 40em;
+}
+
 table {
     border: 1px solid grey;
     background: #f0fff0;

templates/book/authors.html.ep

@@ -2,6 +2,9 @@
 % title 'Authors';
 <h1><%= title %></h1>
 
+<a href="/about#search-help">Search help</a>
+
+<p/>
 <%# On a new search, reset the page number to 1. %>
 %= form_for authors => { page_number => 1 } => begin
 %= label_for name_like => 'Name like'

templates/book/books.html.ep

@@ -2,8 +2,7 @@
 % title 'Books';
 <h1><%= title %></h1>
 
-Some books have no associated author. To search for these, use
-author like '[no author]'.
+<a href="/about#search-help">Search help</a>
 
 <p/>
 <%# On a new search, reset the page number to 1. %>

templates/home/about.html.ep

@@ -2,4 +2,50 @@
 % title 'About';
 <h1>About</h1>
 
-All about MyApp.
+<div class="verbiage">
+
+  This is a small app for looking through
+  <a href="https://www.gutenberg.org/">Project Gutenberg</a>'s
+  book catalog, as provided via
+<a href="https://tildegit.org/barnold/dbix-tutorial">this little project</a>.
+
+<p>
+In its present form it's a little bit of an oversimplification. As
+presented here, each book has exactly one "author", or more
+specifically one row in an "author" table. In practise, an "author" is
+really a list of zero or more <em>contributors</em> - authors,
+editors, illustrators etc.  So really the relationship between "book"
+and "author" is many-to-many between "book" and "contributor". For
+simplicity, this app ignores the distinction and pretends that a book
+has exactly one author.
+</p>
+
+<h2 id="search-help">Searching</h2>
+
+<p>
+For either author or book, the search returns records that contain
+your search string, regardless of case.  So a search for books with a
+title like "anna" will return "Anna Karenina" and "Tyburn Tree: Its
+History and Annals", among others.
+</p>
+
+<p>
+There is a variety of not-really authors in the catalog. Some books
+have no author entry. For simplicity, these are represented in this
+app as having the author named "[no author]" to make them easily
+searchable.
+</p>
+
+<p>
+I.e. to find books with no author, put the string "[no author]" into
+the author field of the search form ("Author like" on the books page
+or "Name like" on the authors page).  Other non-authors are
+"Anonymous" and "Unknown".
+</p>
+
+<p>
+Comments and questions welcome
+at <a href="mailto:barnold@tilde.club?Subject=Awesome%20project!">barnold@tilde.club</a>.
+</p>
+
+</div>