It helps me to remember words if I see the words written down

You have a visual and verbal style of learning. You can help your memory by using images, drawing diagrams, writing words down and focusing on them. English spelling is particularly challenging for native speakers so don’t worry if you find it difficult. It’s a good idea to find and use memory strategies that suit your learning style. Try googling ‘memory strategies for language learning’, and you will find lots of useful tips.