There are several websites on the internet that can help you to prepare for the Italian Language test:

The following are proposed online courses to help you to practice and pass the Italian language test. There are interactive exercises on grammar, spelling, oral comprehension, video lessons and much more. 

• Italian Language Test - by the "Paesi" Website
  All information relating to the test and how to carry out sample tests.
   
• Parliamoci chiaro: (Let's be clear) an online platform to learn Italian (from the ISMU Foundation website)
  An Italian eLearning environment for foreigners
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• ​The Italian Language Portal - by RAI Italian Culture
  Video lessons, activities and information on Italian culture and civil life. 
   
• Puntolingua - an Italian Language Portal for foreigners​
  Italian exercises, level evaluation, corrections and online tutoring
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• School and Surroundings
  Online grammar exercises, didactic materials and resources
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• Italian Language and Grammar Portal - by Italiano.lascuola.it
  Online grammar exercises

• ELIZA  - Zanichelli Linguistic Exercises​
  Exercises in beginner/intermediate/advanced Italian vocabulary, grammar and spelling
   
• Italian for Foreigners - by Loescher 
  Didactic activities to develop written and oral comprehension, audio, video, games and simulation tests for EU resident permit applicants.
   
• One world italiano - Learn Italian Online
  Dialogues, listening exercises, grammar, vocabular and Italian language video courses.
   
• Test your Italian​
  Beginner, Intermediate and Advanced grammar exercises