For ADM201 certification, Webassessor 20$ Practice test worth it or taking up trail head "Administrator Certification Prep Interactive Practice Test" would help? Please Guide

The Salesforce admin exam is a challenging test that requires a lot of preparation. And I wrote an article which goes over some tips and tricks that could help you better prepare it.

https://www.priscillahongsalesforce.com/pages/salesforce-admin-certification-ultimate-guide