I won't give links, because I do not use ruby, but got a couple of tips:
1) Learn English
New technologies rarely appear in Russia, and if there are, then all the documentation is done first in English.
2) Learn English
All the good documentation is written in English and many where published. Good Russian documentation is now being published only in blogs and on habré. Anywhere else can't find her, and if you find that it is terribly old and not updated.
3) Learn English
Even if you will find Russian documentation 3 RoR(actually, RoR 3 is so new that it almost nobody else, and is not in use), then your questions will gladly answer Google, but in English only.
4) Learn English
No one wants to support your code if it will contain classes "MojCatalogTovarov". Save the nerves themselves and others.
5) Learn English
Many of the questions a hundred times already discussed in various community and easily gugliada, but only in English.
6) Learn English
Anyway I have to.