There is no universal answer to this question, as the speed at which you learn Italian will depend on several factors, such as your motivation, commitment, availability of time to study, among other things. In addition, different learners have different learning times and these vary from person to person. Some people have an easier time remembering the vocabulary but have more challenges when it comes to mastering the grammar, and vice versa. However, for those who are fluent in Spanish, it is easier to learn Italian as both languages share Latin roots. It is estimated that if you study for a year, you can have a basic knowledge of Italian.