There are a variety of ways to learn a new language. Some people prefer to learn the grammatical aspects of the language. Others prefer concentrating on the conversational aspects. Others prefer to learn by concentrating or focusing on vocabulary. Whatever your preference might be, becoming fluent will likely require a combination of all these.
The grammatical aspect is probably one of the most difficult to master for most people. They may remember the taxing and tedious sentence diagrams from elementary school English or the tedious exercises identifying adverbs, gerunds, or adjectives. Whatever the case may be, verb conjugation in particular is extremely important to mastering a new language. Those who find it beneficial point to the fact that grammar provides clear rules to follow, at least in most cases. These rules provide a decipher or code necessary to interpret, understand, and conjugate foreign words correctly.
Focusing on conversational skills is probably one of the most popular exercises for people to follow. The reason for this lies in the fact that it provides the most practical skills. When people are traveling abroad a phrasebook, translator, or the conversational skills they have learned become the most important elements in their communication. Grammar of course is important when looking for effective communication beyond the minimal requirements of a trip abroad. Grammar insures that every word can be understood and that an individual can properly express present and future tense scenarios.
Other individuals focus on building vocabulary as the core of the language study. The idea is that since vocabulary forms the core, this should be the focus for any student. The idea here is that the gaps of grammar and conversation can be filled in naturally, the same way that a child pieces together bits and pieces of vocabulary to make themselves understood. Slowly but surely, a child connects their vocabulary with proper grammar typically learned by absorption from interaction of with speakers who are proficient.
A variety of language programs are available. Many of them seek to focus on a particular element as illustrated above, while others focus on providing a complete experience. They do so by providing sections and exercises focusing on grammar and sentence structure, conversational dialogues, and vocabulary exercises.