Try to understand the meaning of a new word from the context. If you really cannot understand, use a dictionary and record the word. Perhaps you already have some books in English. Or take a look in a library or bookshop. In many cities you can use the library of the British Council.
Some publishers produce 'simple' books for beginners.
They are short, simplified stories. Usually they have notes and explanations. We also have some short stories in EnglishCLUB.net Fun and Classic Reading in EnglishCLUB.net Study where there are notes to help you. Newspapers You can learn a lot of new vocabulary from a newspaper. You can find British or American newspapers in all the big cities of the world.