How to add a link?

I followed a RoR guide at
At 6.2(Adding a link) ,i got a error.I Open app/views/home/
index.html.erb and modify it as follows:

Hello, Rails!

<%= link_to "My Blog", posts_path %> Now started server ,and when i click on "My blog",it gave following error

NameError in Posts#index

Showing /home/amrit/blog/app/views/posts/index.html.erb where line #28

undefined local variable or method `new_posts_path’ for #<#<Class:

The contents of app/view/posts/index.html.erb file are as follow

Listing posts

<% @posts.each do |post| %>

<% end %>
Name Title Content
<%= %> <%= post.title %> <%= post.content %> <%= link_to 'Show', post %> <%= link_to 'Edit', edit_post_path(post) %> <%= link_to 'Destroy', post, :confirm => 'Are you sure?', :method => :delete %>

<%= link_to ‘New posts’, new_posts_path%>

I am using ubuntu 10.04 and rails 3.07.