When you install Evergreen, the TPAC templates include many placeholder images, text, and links. You should override most of these to provide your users with a custom experience that matches your library. Following is a list of templates that include placeholder images, text, or links that you should override.
All paths are relative to /openils/var/templates/opac
parts/config.tt2: contains many configuration settings that affect the
  behavior of the TPAC, including:
parts/footer.tt2 and parts/topnav_links.tt2: contains customizable
  links. Defaults like Link 1 will not mean much to your users!
parts/homesearch.tt2: holds the large Evergreen logo on the home page
  of the TPAC. Substitute your library’s logo, or if you are adventurous,
  create a "most recently added items" carousel… and then share your
  customization with the Evergreen community.
parts/topnav_logo.tt2: holds the small Evergreen logo that appears on the
  top left of every page in the TPAC. You will also want to remove or change
  the target of the link that wraps the logo and leads to the
  Evergreen site.
parts/login/form.tt2: contains some assumptions about terminology and
  examples that you might prefer to change to be more consistent with your own
  site’s existing practices. For example, you may not use PIN at your library
  because you want to encourage users to use a password that is more secure than
  a four-digit number.
parts/login/help.tt2: contains links that point to http://example.com,
  images with text on them (which is not an acceptable practice for
  accessibility reasons), and promises of answers to frequently asked questions
  that might not exist at your site.
parts/login/password_hint.tt2: contains a hint about your users' password
  on first login that is misleading if your library does not set the initial
  password for an account to the last four digits of the phone number associated
  with the account.
parts/myopac/main_refund_policy.tt2: describes the policy for refunds for
  your library.
parts/myopac/prefs_hints.tt2: suggests that users should have a valid email
  on file so they can receive courtesy and overdue notices. If your library
  does not send out email notices, you should edit this to avoid misleading your
  users.
myopac/update_password_msg.tt2: defines the password format that needs
  to be used when setting a user password. If your Evergreen site has set
  Password format regex in the Library Settings Editor, you
  should update the language to describe the format that should be used.
password_reset.tt2: in the msg_map section, you might want to change the
  NOT_STRONG text that appears when the user tries to set a password that
  does not match the required format. Ideally, this message will tell the user
  how they should format the password.
parts/css/fonts.tt2: defines the font sizes for the TPAC in terms of one
  base font size, and all other sizes derived from that in percentages. The
  default is 12 pixels, but some design sites strongly
  suggest a base font size of 16 pixels. Perhaps you want to try 1em as a
  base to respect your users' preferences. You only need to change one number
  in this file if you want to experiment with different options for your users.
parts/css/colors.tt2: chances are your library’s official colors do not
  match Evergreen’s wall of dark green. This file defines the colors in use in
  the standard Evergreen template. In theory you should be able to change just
  a few colors and everything will work, but in practice you will need to
  experiment to avoid light-gray-on-white low-contrast combinations.
The following are templates that are less frequently overridden, but some libraries benefit from the added customization options.
parts/advanced/numeric.tt2: defines the search options of the Advanced
Search > Numeric search. If you wanted to add a bib call number search option,
which is different from the item copy call number; you would add the following
code to numeric.tt2.
<option value="identifier|bibcn">[% l('Bib Call Number') %]</option>