Question

Basic English course

Answer 1

If you just started learning English, you first need to know some basic rules of the language. Developing a solid foundation in English grammar will not only help you create your own sentences correctly but will also make it easier to improve your communication skills in both spoken and written English

You mainly need to learn tenses and verb forms which are very useful in daily conversations.

You need to learn conjunctions,prepositions,
adjectives

If ur grammar is good and if u know all the tenses properly u will be able to speak English well.

Answer 2

ABA English Course :  for those who have never studied english.

There are many online courses.
You can check your vocabulary by attempting online vocabulary tests.
By doing so you can know you weakness.
You can also attempt STEP test introduced by The Hindu Group.

Side-by-side you have to read books,daily headlines,and so on.
This will help you a lot to improve your vocabulary.

Hope it helps....................