I'm working my way through Japanese the Manga Way and so far it's great. The book gives examples for the points it makes, but I wanted to get even more examples to really let the concept sink in for a particular point. Does anyone here have a good method for that?

Most grammar points involve a key grammar word or elaborate conjugation - in any case a fixed set of characters that you can search for on ALC or tatoeba
http://www.alc.co.jp
tatoeba.org

Points that involve an actual word you can often find examples for in the dictionary,
dic.yahoo.co.jp
dictionary.goo.ne.jp

And if you pick up the dictionar(y/ies) of basic (intermediate, advanced) grammar, you can get example sentences from them.

Once you get to a pretty good level of understanding you can also simply use google searching from the japanese google page, or from google.com with a japanese language setting, but until you can understand the average page brought up from such a search that won't help much. I prefer the resources that come with an English translation anyway in order to be more certain of the meaning.

[s0apgun]

Tae Kim gives several example sentences and different usages that you could compare.

http://www.guidetojapanese.org/learn/grammar

There's also a shared Anki deck of Tae Kim's example sentences.

Thanks guys!