memorizing big words in icelandic?

Big icelandic words are usually compound words, what I do is spread the word and learn me each separately (this technique is very effective when writing in Icelandic as it is easier to remember).

Example: "Eyjafjallajökull". Looks like one word, and it is, but it also has three moving parts in it — eyja, fjalla and jökull.
“Fjall" means "mountain" and "eyja" means "island". But if you put them together they mean "Eyjafjöll", which means "Island Mountains", and if you put “jökull" at the end it means "The glacier on top of the mountains you can see the islands from".

Good luck!