Each of the following plugins has a separate documentation index page. The documentation section has detailed documentation including video tutorials on how to install, configure and use that plugins:
- WP eStore documentation site
- WP Affiliate Platform Documentation site
- WP eMember documentation site
- WP PDF Stamper documentation site
- WP Lightbox Ultimate Documentation
- WP Affiliate Link Manager
Following the instructions outlined in the documentation is a good way to get started.