I am having problems grasping the 3rd declension (in Ancient Greek). All the grammars I have consulted seem to just decline 10-20 nouns from this declension in full and assume you're set; whereas I prefer to know the rule that causes those endings to be employed. What different sub-declensions are there? What's the difference between the various consonental sub-declensions and i- and u-stems? (in terms of different endings)
I'm rather confused by this; when I was learning Latin, all I had to worry about was an i-stem or a consonant-stem, and masculine/feminine or neuter!
Thanks in advance for any responses,