Theme development

I'm running 'guard' Ruby command but i get this error, I installed all dependicies, and its on windows 7 x64

D:\xampp\htdocs\omega4test\sites\all\themes\subtheme>bundle exec guard
D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/guard-1.8.1/lib/guard/interactor.rb:8:in `require': cannot load such file -- pry (LoadError)
from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/guard-1.8.1/lib/guard/interactor.rb:8:in `'
from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/guard-1.8.1/lib/guard/interactor.rb:6:in `'
from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/guard-1.8.1/lib/guard/interactor.rb:1:in `'
from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/guard-1.8.1/lib/guard/dsl.rb:38:in `require'
from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/guard-1.8.1/lib/guard/dsl.rb:38:in `'
from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/guard-1.8.1/lib/guard/dsl.rb:34:in `'
from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/guard-1.8.1/lib/guard/dsl.rb:1:in `'
from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/guard-1.8.1/lib/guard.rb:10:in `require'
from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/guard-1.8.1/lib/guard.rb:10:in `'
from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/guard-1.8.1/lib/guard.rb:8:in `'

How do I control the output of nodes rendered inside a specific region, like the Sidebar First?

I can theme the blocks in that region by creating a block--sidebar-first.tpl.php but node--sidebar-first.tpl.php does not work.

Any body else having trouble with drupal update not recognizing upgrade of Responsive Bartik?

If I try to Put a image.png in the background of Bartic Templete. Image comes, but fonts don't match and if I change fonts in custom way the image disappear, so this confusing me I need help on this issue. I am using Drupal 7.22

Hey everyone!
As a noob to Drupal, I am in search of a tutorial on creating themes. Any suggestions?

I'm trying to create a notification so that when a specific user creates or changes content on the site another specified user gets an email notification.