How about trying to learn German vocabulary with pictures? It is a more interactive way of learning in comparison to staring at a list of words. It will be easier to remember words this way and is especially useful for visual learners! The pictures will help you memorize the words because you are not only looking at the words, you are also seeing a visual representation of them. To make your vocabulary learning even more effective, read the vocabulary out loud. This way you are practicing your pronunciation. Repetition will also help solidify vocabulary in your head. Make sure to include an article with each noun.
Try to find pictures that represent topics that will help you in your everyday-life. Topics can be divided into subsections such as food (breakfast, lunch, dinner, vegetables, fruits, meat), architecture (houses, furniture, rooms), family (family members, family events), health (doctor's visits, dentist's visits, illnesses), visits to the hospital), emotions (happy, sad), animals (types, visits to the zoo), the human body (parts, injuries), professions (types of professions, university), the weather (types, natural disasters), sports (types, training, the gym), school (the classroom, subjects, yard) and transport (types). Learning vocabulary is essential to learning any language, German is in no way different. It is important to be consistent with your learning of German and to revise old vocabulary once in a while. A short session of learning every day (15 minutes) is much better than studying one day a week for a long period (3 hours). Spaced and constant repetition of vocabulary is the most effective way of remembering words and phrases. It is a good idea to use your new vocabulary in sentences. This way you will understand the word properly and know how to use it in context as well as practicing your sentence structure and grammar.