I have been raised in a western country where it would be fair to say I was raised with a negative few of Germany in regards to WW1 & 2 - however after hearing this I in fact have more or less a positive few of Germany during WW1. I guess I'm asking this question about Germany and Jews because I want to understand how Nazism was reached.

Well then I need to warn you not to fall into what is called second option bias. That is, you are told X implicitly your entire life and when you hear a contrary viewpoint that is well argued, you instantly switch to the alternative thinking you were 'lied' to or something of that sort. It's a very easy trap to fall into when you first begin studying history and is the source of many terrible biases that can spring up. Just because you were told your entire life, implicilty or explicitly, that Germany was "evil" and now you heard Dan Carlin talk about how 'awesome' they are, that doesn't make them "good".

Let's not mince words. Germany, in 1914, actively perpetrated war crimes condoned from the top down. I personally study a lot of genocide, it's what I've been reading pretty much entirely these past few months and while what happened in 1914 Belgium was not genocide it sure rhymed. Entire towns were exterminated in fits of rage, sanctioned by the German OHL, including priests and infants being lined up against the walls and mowed down with machine guns. Thousands more would be round up and sent to concentration camps in Germany. Ultimately, through rampant and systemic sprees of violence in Belgium over 1.5 million people, over 20% of their population, was reserved to ditches on the side of the road. 24,000 civilians would be executed in mass killings and another ~65,000 would be killed through forced starvation and other forms of deprivation (ie: forcing people to sleep in ditches on the roadside by destroying their town intentionally).

Germany's choice to escalate the war was entirely self serving, as I go more into depth here. Although the Septemberprogramme is not the bulletproof document Fritz Fischer purported it to be, it in conjunction with recently discovered correspondence documents along with, well, the actual peace they imposed at Brest-Litovsk paints a clear picture: War was waged such that the German Empire would gain total European hegemony while everyone else would be beaten into either vassalage or broken into so many pieces they had no choice but to submit. Now, it is not the historians job to make moralizing claim. But I, personally, am not a historian and I have zero issue calling this out for what it is: It is a war of aggression, for the express purpose of personal power growth, and one which was conducted in a horribly oppressive manner for those who stood in their way. Now that doesn't mean France or Britain or Russia were 'better' or 'worse', I simply have rather a reaction to someone having a "positive" view of any country other than Belgium really in this conflict.

As for your question itself:

I guess I'm asking this question about Germany and Jews because I want to understand how Nazism was reached.

Let's make this clear. Hitler did not invent racism. I'm going to, for the sake of brevity, ignore antisemitism before and during the war and focus on the factors that made it explode in the post war. However, this comes with a massive asterisk -- Germany, and everyone else for that matter, had horribly antisemitic sentiments proliferated across society. This was not in a vacuum.

Now, to understand where the Nazi's built their hatred of Jews, you need to understand the situation Germany was in when they lost. The short of it (more depth here) is that, in 1918, Germany was completely and utterly finished. Like in an objective standpoint, they were just done. Britains blockade destroyed their food supply and economy, people were literally starving in the streets. Horrible economic management of the war on account of the German government only worsened the situation. France had blunted their all in Spring Offensive, as did Britain, and now 10,000 American soldiers were flooding into the front lines per day. Germany was, needless to say, not just on the back foot but teetering on the edge of total collapse.

And then, it happened. The High Seas Fleet, after spending the entire war sitting around doing nothing, was ordered at the very end to perform what was, in essence, a suicide mission. A 'last hoorah' if you would. This notion of fighting to the end, going with honor, is central to understanding the rise of German antisemitism in the upcoming years. Obviously, the navy gave the leadership the middle finger and then mutinied. Then, the rebelling spread. Soon thousands of sailors and volunteers were tearing apart the Northern port cities of Germany. At the same time, revolutionary sentiment was spurring -- notably, Communist revolutionary sentiment. And then the major cities were seized across the country, and Bavaria even seceded as a Soviet Republic. In response to the threat of basically about to be torn asunder, deals were met, the royal family was forced to abdicate, and peace was finally forced.

This, this right here, is where it all comes from. The so called "stab in the back" myth. The army had full plans to create a levee en masse, to build up defenses behind walls of millions of civilians, across Germany and fight it out to the end. The navy wanted to go out with honor. And to them, peace stripped that from them. Even worse, the peace neutered Germany as a military power -- to them, it made them "slaves" of the French and British. They had lost all their hard earned gains in the East from Brest-Litovsk and they didn't even get to defend their homeland -- they surrendered on enemy territory! Now, defeat was inevitable as was the collapse of Germany if they didn't surrender soon but the average person obviously did not know that.

So, once again, the Jews would be scapegoated. They were the source of the ills. It would be Jews (who would soon become synonymous with "bolsheviks") who revolted in Germany and tore her apart in her most dire hour. It would be Jews who forced Germany into a peace that the people were not yet ready to accept supposedly. It would be Jews who sold Germany out at Versailles and neutered her. Fabricated documents like "The Protocols for the Elders of Zion" were used as evidence that Jews were 'war profiteers' and milked Germany's suffering for their own gain. But, really, it was an honor situation. Germany didn't have a problem with Versailles itself, they had a problem they lost. And the General Staff, wanting to save face for a war they are responsible for losing, peddled that bullshit onward. So the people felt they lost a war that they were winning, because of the Jews looking to nick a quick profit.

Source material:

German Atrocities, 1914: A History of Denial by John Horne

Blut und Boden: A history of genocide and extermination from Sparta to Darfur by Richard Kiernan

The First World War: Germany and Austria-Hungary, 1914-1918

Insurrectionary Warfare: The German Debate about a Levée en Masse in October 1918 by Michael Geyer