Each challenge has a word list. For quick reference, the complete word lists are here. The advice is to look at the word list after completing the challenge and not before so that you learn the pronunciation from the challenge.
The link goes to level 2, but level 1 is just below in the thread.
Once you get used to the alphabet it will be easier because the spelling is more or less phonetic.
Sue
…if you are using the iPhone / iPad app - there is a red speech bubble you can press on the page of each challenge (there is no vocab on the Android app).
If you promise not to cheat there a full list in this forum. Just search on vocabulary The search function is the magnifying glass next to the word forum, above.
That’s fine - isio is the written form of the colloquial pronounciation and although you will see people write ‘isio’, especially in informal terms, ‘eisiau’ is actually the correct formal spelling that you’ll find in the dictionary