Could someone guide how to cover post WW2 upto current portion of US History.
I have covered previous portion from Majumdar's book and little bit from JWT, but it isn't helping much in after 1945 era.

Surely, Majmudar's books does not include Post WW2 US history.
Kindly be specific, what part of post-WW2 US history you are referring to know?
Because, Post-WW2 US history is outlined with number of events like Cold-War, US economic elevations, as a world power and etc...
It will be conducive for members to answer that specific part and for you as well.

Every necessary aspect after WW2. Can't leave anything on choice since recently more questions are being asked from post-1900 era.

For this google what ever topic you wanna do. Read journals/articles about that. Because its vast and contemporary, therefore, no one book encompasses it. Need to be done topic-wise individually.

P.S. For any specific topic related query post here. Rest google is open!

Do you have data on factors that led to formation of New England Confederation 1643 and Characteristics of colonial assemblies during revolutionary years?
I'm unable to find satisfactory answer to these and apart from that most people confuse former with factors responsible for colonization

World War II, also called Second World War, conflict that involved virtually every part of the world during the years 1939–45. The principal belligerents were the Axis powers—Germany, Italy, and Japan—and the Allies—France, Great Britain, the United States, the Soviet Union, and, to a lesser extent, China. The war was in many respects a continuation, after an uneasy 20-year hiatus, of the disputes left unsettled by World War I. The 40,000,000–50,000,000 deaths incurred in World War II make it the bloodiest conflict, as well as the largest war, in history.
Along with World War I, World War II was one of the great watersheds of 20th-century geopolitical history. It resulted in the extension of the Soviet Union’s power to nations of eastern Europe, enabled a communist movement to eventually achieve power in China, and marked the decisive shift of power in the world away from the states of western Europe and toward the United States and the Soviet Union.
The outbreak of war
By the early part of 1939 the German dictator Adolf Hitler had become determined to invade and occupy Poland. Poland, for its part, had guarantees of French and British military support should it be attacked by Germany. Hitler intended to invade Poland anyway, but first he had to neutralize the possibility that the Soviet Union would resist the invasion of its western neighbour. Secret negotiations led on August 23–24 to the signing of the German-Soviet Nonaggression Pact in Moscow. In a secret protocol of this pact, the Germans and the Soviets agreed that Poland should be divided between them, with the western third of the country going to Germany and the eastern two-thirds being taken over by the U.S.S.R.
Having achieved this cynical agreement, the other provisions of which stupefied Europe even without divulgence of the secret protocol, Hitler thought that Germany could attack Poland with no danger of Soviet or British intervention and gave orders for the invasion to start on August 26. News of the signing, on August 25, of a formal treaty of mutual assistance between Great Britain and Poland (to supersede a previous though temporary agreement) caused him to postpone the start of hostilities for a few days. He was still determined, however, to ignore the diplomatic efforts of the western powers to restrain him. Finally, at 12:40 PM on August 31, 1939, Hitler ordered hostilities against Poland to start at 4:45 the next morning. The invasion began as ordered. In response, Great Britain and France declared war on Germany on September 3, at 110 AM and at 50 PM, respectively. World War II had begun.

Kindly, read what his question is!
I have been looking at the CSSForum from certain days, there are few new accounts who are just posting irrelevant to the query raised in threads.
Kindly, "irrelevancy" is against forum rules, spare us from such copy-paste.

@oyewaqar, @Innocenthafeez did you notice?

Yes, especially from new members.
Since I'm myself knew to the form, I can't understand what they are up-to.