Problem:

Display different result in view's loop on odd/even condition.

Solution:

If you are using classic editor to create/edit the post view, you can setup the codes within view's loop like this:

https://toolset.com/forums/topic/sorting-by-odd-or-even/#post-2054945

Relevant Documentation:

https://toolset.com/documentation/programmer-reference/views/views-shortcodes/#wpv-loop

https://toolset.com/documentation/legacy-features/views-plugin/digging-into-view-outputs/

Problem:

I am trying to understand how should I set up my email notifications for each stage.

Solution:

If you want send an email notification, you can follow our document to setup a email notification post forms:

Relevant Documentation:

https://toolset.com/course-lesson/send-notifications-when-someone-submits-the-form/

https://toolset.com/course-lesson/setting-up-automatic-post-expiration/#sending-email-notifications-when-posts-expire

Problem:

Solution:
There is no step by step information to convert the legacy views but we offer few course that may help you to learn the blocks step by step.
=> https://toolset.com/documentation/

You can pick any of the course and navigate to your desired section.

However, I've another option that may help you to learn and play with the blocks. Toolset offers free test platform http://www.discover-wp.com where we offer the reference sites build on top using Toolset.
=> https://discover-wp.com/site-templates/

You can use any of the reference site we offer and create a test site for you and play with it and learn how those block based views are created.

Relevant Documentation: