Simple Object Access Protocol User Interface (SOAP UI) is an web service testing application for service-oriented architectures (SOA) and Representational State Transfers (REST). Its functionality covers web service inspection, invoking, development, simulation and mocking, functional testing, load and compliance testing.
In this, you can get access to the tool by installing it or downloading binary file for practice so that if I missed something or it got updated you can have hands on practice.
SoapUI Core features include:
Web services inspection
Web services invoking
Web services development
Web services simulation and mocking
Web services functional, compliance and security testing