A great deal of what passes for language commentary turns out to be peevery, superstition or outright charlatanry. But the Internet also harbors a multitude of resources from which reliable information and informed opinion can be obtained.
Arnold Zwicky, linguist and contributor to Language Log, has gone to some trouble to assemble on his own blog a list of such blogs and resources, which he is taking some trouble to keep up to date. You could do worse than to bookmark this site
and consult it regularly.
Disclosure requires that I point out that he includes, and recommends, You Don’t Say.