I need to modify the Login form to provide extra instructions to my confused members

How do I access that one? I know there's a simple link but i cant find!
updated by @elise: 12/10/16 10:55:59PM
{if $_post._uri == '/user/login'}
<div>
THIS IS AN EXTRA BIT added to just the login page
</div>
{/if}
<li><a href="{$jamroom_url}/{$uurl}/login">{jrCore_lang skin=$_conf.jrCore_active_skin id="5" default="login"}</a></li>
<li><a href="{$jamroom_url}/login">{jrCore_lang skin=$_conf.jrCore_active_skin id="5" default="login"}</a></li>
{if !jrUser_is_logged_in()}
{jrCore_module_url module="jrUser" assign="uurl"}
{if $_conf.jrCore_maintenance_mode != 'on' && $_conf.jrUser_signup_on == 'on'}
<li><a id="user-create-account" href="{$jamroom_url}/{$uurl}/signup">{jrCore_lang skin=$_conf.jrCore_active_skin id="4" default="create account"}</a></li>
{/if}
<li><a href="{$jamroom_url}/{$uurl}/login">{jrCore_lang skin=$_conf.jrCore_active_skin id="5" default="login"}</a></li>
{/if}
{if !jrUser_is_logged_in()}
{jrCore_module_url module="jrUser" assign="uurl"}
{if $_conf.jrCore_maintenance_mode != 'on' && $_conf.jrUser_signup_on == 'on'}
<li><a id="user-create-account" href="{$jamroom_url}/{$uurl}/signup">{jrCore_lang skin=$_conf.jrCore_active_skin id="4" default="create account"}</a></li>
{/if}
{* <li><a href="{$jamroom_url}/{$uurl}/login">{jrCore_lang skin=$_conf.jrCore_active_skin id="5" default="login"}</a></li> *}
{/if}