There some techniques ,that i can suggest.First of all,you should learn the grammar of the language that you want.You should know the question form ,because it is really will help you .If you can give right questions ,you will get this language easily.The next step is to learn essential words.For this you can read books that are written for beginners ,and by this way you will increase your range of vocabulary.Also ,you can saparete worlds into qroups that are related by the one topic .This method will help you to memoraize many words.Good luck !