The documentation was more explained before. I tried following that tutorial long time ago and so many steps was there. You can see in that tutorial what you sent supposed to be a part with "Table 4.2: Building the “My account” page with Toolset" This table is missing completely missing with other parts..
I remember it was step by step docs for creating all steps.. Page for creating lost password then all steps that follow... Like add email to send new password.. Then the page with creaate new password.. Etc... I can find this
All information regarding the shortcodes is available with above Docs. You just need to add shortcode at your desired place and use the GUI to add shortcodes. When you click on "Fields and Views" button, you will see the section "Password management" that will allow you to add all above shortcodes with GUI.