Ruby on Rails

I am doing the sample application "trips-app" based on this slightly deprecated set of instructions https://ruby-geekcampbaguio.herokuapp.com/#2-database-crud

I'll tell what worked so far and what has been different.

In the instructions it refers to db/migrations but on my version of rails it is db/migrate
I ran into this error but I resolved it
 ActiveRecord::DuplicateMigrationNameError: Multiple migrations have the name CreateItineraries
by finding the duplicate file in finder and just dragging it to the trash.

Then I was able to perform a rake:db migrate

But the entire time I have been getting this error
NameError: undefined local variable or method `itinerary' for main:Object
    from (irb):1
    from /Users/dev/.rubies/ruby-2.2.2/bin/irb:11:in `<main>'
Instead of the errors that are documented from the set of instructions I am using.

I found a great deal of similar errors on stackexchange and so on, but so far I've yet to glean yet specifically I am meant to do here.

Here is a sampling of the results one will come across on Yahoo! today if searching the boolean "NameError: undefined local variable or method for main:Object" (sans the keyword `itinerary')

http://stackoverflow.com/questions/19867354/nameerror-undefined-local-variable-or-method-user-for-mainobject

http://ruby.about.com/od/faqs/qt/Nameerror-Undefined-Local-Variable-Or-Method-A-For-Object-0x1001c92a0.htm

http://ruby-doc.org/core-2.2.2/NameError.html

https://groups.google.com/forum/#!topic/ziya-plugin/-YXdFbFaA5s

I have bolded the pages that I found helpful but I still need a specific solution, any takers?