1)

Enter Username and Password

2)

Tap on "Log In"

3)

Tap on the Navigation Menu

4)

Scroll down to see Opportunity option 

5)

Tap on "Opportunities"

6)

Choose any Opportunity from here

7)

Tap on "Show More"

8)

Tap on "MyGuide"

9)

Here, you can view MyGuide in Salesforce1!