Chabad is a great resource to many, but lilmod is right that a lot of their standings are not mainstream. Breslevers are extremely strict regarding Zman hatefillah, while Chabadniks essentially ignore those hilchos altogether. I don’t say that as an insult, that’s just something you should be aware of.
You’ll have trouble finding a mainstream Breslev presence on the internet. You’ll get a lot of “Neo-Chassidishe” kind of Breslev on the internet and some of the Breslev velt that’s a little more chummy with Zionism. The “super observant Breslevers” (as the OP put it) are not going to have a big presence on the English internet, or the internet at all for that matter. But, you can make do; I wish you the best of luck.