Greetings all! I have recently begun to study the Old Norse language -
I have a bit of a secret vice for languages - and I've run into a bit
of a snag in my research.

I am working on inflections and I am having trouble determining how to
tell which declension to apply to which nouns. In what way can I
discover, for example, when to apply an A-Stem declension or a WA-Stem
declension? It is my understanding that the vowel stem was lost at
some point in the language's history, so it has been a bit difficult
for me to practise my paradigms.

Any assistance anyone could offer in this would be greatly greatly
appreciated.