This booklet is intended to help advanced students of Spanish in the practicing of Subjunctive - one of the most important moods used quite frequently in everyday communication. There is no evidence that this mood is going to disappear. Knowing how it works, how to apply its concepts in the communication is one of the goals of this material. It is impossible to communicate in Spanish avoiding the use of subjunctive. As human being we need to express feelings, opinions, commands, etc. when we communicate with others. Learning and practicing subjunctive will give to the learners the tools to express themselves better using it. Current version is an interactive edition when learner decides to work online. To that end the author is aiming to provide the link by contacting him after purchasing the book.