Fastest way to learn language is to stay in that society/country OR have english friend to talk. daily have schedule time (even 20min a day but dont skip) you have to be persistent, because if you are not in-touch, even a month , you will forget. grammar understanding is by examples and guide, internet is good option. still you need to discuss it. lot of italki and other forums are there. Vocabulary is memory test, lot of vocabolary games and memory cards are available to make it fast for IELTS etc there have to be strong motivation too :-)

well ... u have to study harder in order to feel some progress in this area, my friend & not to twiddle your thumbs fooling around...u know where )))) ! do not kill me - i wanna live hahaha! see ya ) God bless u)