Daria's suggestion is great! I used this method when I was studying Latin. I would also suggest learning them in a sentence. Try to write sentences in context and then attempt to use them, say for example if you are in class or have a language partner.

The methods of learning languages differ according to the person. For instance,I used to memorize words and used small pieces of paper (they were with me most of the time) but then I remembered only a few words (though I was hurrying to learn English). I started to watch movies this time with subtitle and found out new words in the dictionary and memorized it,again useless. After this I began to watch movies without using the dictionary and just guessed the meanings and this seemed to be the best! So I suggest you not to use a dictionary a lot and just guess the meanings. Reading books is just like movies.

There are a lot of different methods like songs or word cards or stickers :) I prefer songs, but if I could I'd use the stickers ( you put them everywhere in your house and you keep them attached on the walls/furniture till you know them!) with english words too.