This list is based on Isaac Asimov's own list of the fictional order of his works, with one correction and one addition:

The Complete Robot (1982) Collection of 31 Short Stories about robots.

The Caves of Steel (1954) His first Robot novel.

The Naked Sun (1957) The second Robot novel.

The Robots of Dawn (1983) The third Robot novel.

Robots and Empire (1985) The fourth (final) Robot novel.

The Stars, Like Dust-- (1951) The first Empire novel.

The Currents of Space (1952) The second Empire novel.

Pebble in the Sky (1950) The third and final Empire novel.

"Blind Alley" http://www.isfdb.org/cgi-bin/title.cgi?41602[1]

Prelude to Foundation (1988) The first Foundation novel.

Forward the Foundation (1992) The second Foundation novel. (Not in Asimov's list as it had not been written yet.)

Foundation (1951) The third Foundation novel, comprised of 5 stories originally published between 1942-1949.

Foundation and Empire (1952) The fourth Foundation novel, comprised of 2 stories originally published in 1945.

Second Foundation (1953) The fifth Foundation novel, comprised of 2 stories originally published in 1948 and 1949.

Foundation's Edge (1982) The sixth Foundation novel.

Foundation and Earth (1983) The seventh Foundation novel.

The list is based on Asimov's list of fictional chronological order in the forward to Prelude to Foundation With one correction. Asimov apparently put The Currents of Space before The Stars Like Dust by mistake.

In The Stars Like Dust everybody knows that the radioactive Earth was the original home world of humans. Only a part of the galaxy has been explored and colonized yet.

In The Currents of Space every region and every planet in the galaxy has been explored and most habitable planets have been settled for centuries or millennia. The planet Trantor, near the center of the galaxy, that probably was not even discovered in the era of The Stars Like Dust, has been settled for so long and advanced in population and industry so much that it has conquered half the galaxy. Nobody knows which planet Humans originated on - Earth is merely one candidate.

And in Pebble in the Sky The Republic of Trantor has conquered and united all the galaxy and become the Galactic Empire. If I remember correctly the year is seven hundred and something of the Galactic Empire. Earthmen are the only people who claim that Earth is the original home of humans. At whe end of the story a project begins to remove earth's radioactivity.

I'm not sure if the Galactic Empire in "Blind Alley" is the same one as in the Foundation series. But I guess it wouldn't hurt to read it. And it might have been referenced in one of the Foundation novels written after Asimov's death like Foundation's Fear (1997) by Gregory Benford, Foundation and Chaos (1998) by Greg Bear, or Foundation's Triumph (1999) by David Brin.

If i remember correctly "Blind Alley" is in year eight hundred and something of the Galactic Empire.

Some people recommend reading Foundation (1951), Foundation and Empire (1952), and Second Foundation (1953) before Prelude to foundation and forward the foundation novels to avoid spoilers of surprises in those novels.

This list includes other works more or less in the Robots/Empire/Foundation series:

https://en.wikipedia.org/wiki/Foundation_series#Other_authors[1]