For readers, the most dependable way to follow a writer is to combine two or three independent sources. A retailer's author page gives the catalog and often a follow option; a reader community adds release notifications and series tracking; the publisher's catalog confirms what is genuinely in print. If the author keeps a personal site or newsletter, treat it as a supplement rather than the sole source, since personal domains lapse frequently.
When a name is unfamiliar or possibly a pen name, verify bibliographically before trusting biographically. Look for the name in a publisher's catalog, in WorldCat or a national library, and on editions with valid ISBNs. A writer documented in those places exists independently of any single website — including this one.