There´s a good phone application called "Babbel" where you can learn and memorize a lot of different words. 

Hi,

One thing is very important. Don't learn only words, learn phrases or more words together, like this: black cat. So not seperate it and learn the word "black" and the word "cat", learn it together, it makes easy to remember that. And the best, create sentences with the new word as well, to understand not only the meaning, but the usage too. This helped me, I hope it will you too.

HI! There is a good website: www.lingualeo.ru . I`m sure,that it will help to improve your english skills!)

I think there is no specific way but you can choose or find a way to yourself may be this way  suitable for you and not for me  , due to that I say we should memorize vocabularies and repeating themes then making tenses 

Thanks all for your replies . 

What about specific web site or phone applications which allow you to learn few words a day ?

Thanks in advance for your help