Error in "Cases of Russian nouns"
First of all, I don't understand whether the changes that occur at the end of a noun, do they affect the subject or the object. Secondly, except for the nominative case, you should provide the nominative form of nouns and their meaning as well. Like this goes for the second example (the river) on the same page:
Nominative: река (ree-kah) = river
This way, we can understand which addition or subtraction of the ending letter(s) we have to do. Like I kow here that I have to remove a vowel at the end and add an И. What if the last is a consonant?
Secondly, I don't understand the Russian sample texts on the page "Russian Personal Pronouns". English trans;ation of all may do.