Ohanian does what the title says. Einstein made mistakes in most of his early journal papers even during his most productive years of 1905-1922 or so. But his intuition and insight, rather than his math ability, overcame the errors and made him famous. Many personal details are given, including a most interesting one of arranging to give the cash payment for his single Nobel Prize (for the explanation of the photoelectric effect) to his ex-wife #1 as a divorce settlement. Then he paid only about half of that.
It would have been appropriate to have explained, even on a half page, the significance of the work on the photoelectric effect, but I did not see it.
On p xi, a quotation from Einstein appears without comment: "What is essential in the life of a man of any kind lies in what he thinks and how he thinks, not in what he does or suffers." To me, this is a typical justification for Einstein's poor treatment of a number of people. Later Ohanian notes the number of times Einstein often failed to cite prior work to his own in order to fool people into thinking he discovered more than he did (p91).
On p1 there was a cute slip in a list of the things of which Germany was the biggest producer in 1905, which included church organs and canons. I would have thought cannons were meant.
On p9 Ohanian showed typical academic contempt for universal military service in Switzerland. One must note that the tiny country was never attacked by any of its larger neigbors.
More importantly, Ohanian desribed some of the experimental work that led to Einstein's most famous findings on relativity. This was the determination of the speed of light by A. A. Michelson and Morley in 1887 said to have a null result on p18 and a dozen other places. According to John O'Malley Bockris in The New Paradigm, 2005, p108ff, MM actually found a 20 km/sec difference depending on direction. And so did Prof. Dayton Miller, Univ. PA, in measurements he made from 1905-1931. As did Sagnac in 1913, M. Allais, and more recently by Ernest Silvertooth in 1987. These should not have been ignored, but listed, and the differences of null findings in other experiments explained. Moreover, Ohanian repeatedly called the null results, even of MM, "failures". This shows a dogmatic attitude. An honest experiment cannot ever be a "failure".
One other experimental finding that Ohanian did a better job on was the bending of starlight as it passes near the sun. In the four or so expeditions of 1919, two had bad weather, and the one with the astronomer Arthur Eddington made a measurment supporting Einstein's calculation, but also one supporting the smaller deflection predicted by Newton's work. The former was arbitrarily said to be correct. Ohanian gave no reason for this choice, and seemed completely accepting (p244). But on p254: "The 1919 eclipse expedition and Eddington's somewhat slanted data analysis were lucky breaks for Einstein."
On p28, the slowing of clocks moving at relativistic speeds was accepted. Since movement is relative, either of two clocks that moves has relative movement compared with the other, so any slowing of time by one would also be cancelled by slowing of the other, according to Bockris. This was explained away, but I could not follow the reasoning.
On p120 a sugar molecule is said to be 4x as large as a water molecule. Did this mean length? If so, a water molecule is 1.5 Å long, and a sugar molecule is about 18 Å long stretched out. Not 4x.
On p126 Einstein's explanation for the blue color of cloudless sky is beyond my understanding. I thought it was due to absorption of infrared rays by ozone and water vapor that did it.
On p167 there was the inevitable comparison of the energy from explosion of a kiloton of TNT compared with a kilo of uranium. Sloppily, the uranium isotope was not indicated, and the news that only some small fraction of the isotope is converted to energy by fission was missed, as is common. On p175 it is seen again: "But nuclear fusion reactions typically release a million times as much energy as chemical reactions..." presumably per unit mass consumed. It is never mentioned that only a tiny fraction of the "critical mass" of fission bomb material is converted.
Another bias is shown on p252: "But to call a physicist an engineer is not a compliment." Not in my book, since the engineer has the safety and fortune of many people in his hands. A failure generates lawsuits, but the failure of a physicist's theory does not. That should make you think.
On p253: "...each real electron or proton has exactly the same size as every other electron or proton, and its size never changes, no matter what you do to it." This seems at odds with shrinkage at relativistic speeds, which was described earlier.
Einstein's failures, lack of originality, and stubborness about quantum theory in his later years was duly noted. And his shrewdness about money.
Ohanian's writing was excellent by writer's standards, well-edited, and appeared to be well-referenced, but with gaps as noted above. Much personal information I never saw, not only about Einstein, but also on Newton, Galileo and Oppenheimer was fascinating. But many times an explanation would have been more comprehensible with use of diagrams or high-school algebra.