Hello, my name is Smriti Sharan. I am an avid blogger and YouTuber. Follow my Blog, Linkedin and YouTube to learn various aspects of Salesforce.
https://t.me/sfdcamplified feel free to join the telegram group.
Follow my Youtube
Topic Covered
- Step-by-Step Installation Steps
- Step-by-Post Installation Steps
- Video on How to Debug Post Installation Steps
Step-by-Step Installation Steps:
1. Go to Salesforce CPQ Package Installation Links. Navigate to the Salesforce CPQ section.
2. If you are installing Sandbox, Sandbox will be selected. If installed in Production, Production would be selected.
3. After clicking the respective link, it will redirect you to the Login screen. Enter the respective Credentials.
4. Install Package screen will be displayed. It shows three options:
- Install for Admin Only
- Install for All Users
- Install for Specific Profiles
5. Select the grant access to third-party website checkbox and Click Continue.
6. After Clicking Continue, it shows Installation is in Progress.
Once Installation is completed, it sends out an email for confirmation Package successfully installed.
7. To verify the package is installed in org, navigate to Setup | Installed Packages
Post-Installation Steps
1.Authorize New Calculation Service
If you are installing Salesforce CPQ for the first time, navigate to
Installed Packages | Salesforce CPQ | Configure | Pricing and Calculation and click Authorize New Calculation Service. 
2.Execute Post-Install Scripts
Navigate to Installed Packages | Salesforce CPQ | Configure | Additional Settings and re-execute the Post Installation Scripts if they failed during the installation by clicking the Execute Scripts button. 
3.Change Page Layout Assignments
Salesforce CPQ provides a set of pre-packaged Page Layouts with recommended field configurations for Account, Contract, Opportunity and Product.
- CPQ Account Layout
- CPQ Contract Layout
- CPQ Opportunity Layout
- CPQ Product Layout
To leverage the CPQ OOB fields and configurations, we need to assign these Page Layouts to the user profiles Navigate to Setup | Build | Customize | Products | Page Layouts.
Click Page Layout Assignment button. You will be displayed with the list of all the Profiles in the system. 
Scroll to the System Admin Profile. Click on the Page Layout column next to the System Admin Profile and select CPQ Product Layout from the Page Layout to Use picklist at the top and click Save
4. Give CPQ Permission Set License Assignment
Setup | User | Permission Set License Assignment | Edit Assignments
Give the Assignments
5. Give Correct Salesforce CPQ Permissions to the User
Setup | User | Permission Set Assignment | Edit Assignments
Reference
https://help.salesforce.com/s/articleView?id=000382092&type=1
https://help.salesforce.com/s/articleView?id=sf.cpq_install_cpq_package.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.cpq_permission_sets.htm&type=5
