If you're looking around for an offline, dead-tree text, I would recommend Using Russian by Derek Offord and Natalia Gogolitsyna. It's really intended for students at the intermediate level and above, so it's not necessarily helpful for beginners who are still trying to make sense of elementary grammar rules. However, it does have excellent sections on "model verb and noun paradigms" with lots of tables organized by basic patterns, and long lists of which prepositions take which case, and so forth. If you can find it used at a cheap price, it's certainly very convenient to have at hand so that you don't need to go looking up declension-tables on wikipedia.