I think it all depends. Language is a tool used for communication, and English is no exception.There is no royal road to learning, we have to try every means to memorize its vocabulary and grammar. We can follow one book that suits us well,and try to recite or retail its articles, read newspapers and magazines, watch movies, listen to the radio and chat with native speakers, etc. If you want to improve your oral English, chat with people about different topics is obviously a good way, because it can put what you have learned into use, and others can help you correct your mistaks.

i think you can increase your vocabulary when you talk about different topics with others also you can improve your conversational skills and pronunciation when you talk to native speakers but for grammar, i think you need books and a teacher if u r still a beginner in english

Ye, it's so, but it's not best way for learning grammar. It' a way for learning spoken english.

i think its yes. we should practice whatever we are learning.