The best way to learn English

Two skill areas must be emphasized if you want to learn to speak English fluently. The first is memory (which is involved in both vocabulary and syntax) and the second is proprioceptive responses (which are involved in both pronunciation and syntax).

You may be able to learn simple vocabulary-related memory skills with equal effectiveness by using either verbal or visual training methods. That is, you may be able to learn pure memory skills equally well with either spoken drills or written exercises.

However, it is impossible for you to retrain your proprioceptive sense without hearing your own voice at full speaking volume. Thus, in my opinion, it is a waste of your time to do written assignments for the purpose of learning spoken English.

Surprisingly, it will take far less time for you to learn both fluent spoken English and excellent English grammar by studying only spoken English first, than it will for you to study written English grammar lessons before you can speak English. This does not mean, however, that grammar is not a necessary part of spoken English instruction. It is impossible to speak English—or any other language—without correct use of its grammar. My statement simply means that the best way to learn English grammar is through spoken English exercises