I'm sure you can find a lot more using Google or perhaps searching the archives here on FR.
Sure. Zarqawi had a training camp next to bin Laden's near Kandahar, Afghanistan through the 90s. Zarqawi heads the Palestinian terrorist group al Tawhid "the Unitarians" that frequently targets Jordanian, Israeli and US personnel ans was involved in the 1999 Millennium plots, which targeted a hotel in Jordan where US personnel intended to watch Iraq often stay as do Israelis. The other part of the plot was to set off a bomb at LAX airport but an alert female US boder guard caught one of those perps and blew the Los Angeles plot.
Zarqawi established two terror cells in Iraq before the war; one in Baghdad, and one in Northern Iraq near Iran. The cell in Baghdad included Egyptian jihadists and as responsible for decapitating a nun in that city, and operated without interference from th reginme. The cell near Iran was the one dedicated to producing ricin for a European terror network with a cell in Milan which intended to use it to attack public transportation, the same cell which was taped by the Italians discussing the 9/11 attacks and where one guy wanted a souvenir from the hijacked planes when the time comes. This group also had some involvement with a plot involving poison stored in tomato cans as I recall.
Zarqawi's group merged with Ansar al Islam after the US invaded Afghanistan and sent terrorists fleeing through Iran. Ansar al ISlam was a group led by a kurd [Mullah Krekar based in Norway] and which also contained members of Saddam Husein's intelligence service the Mukhabarat. The merged group was then involved in the assassination of American Lawrence Foley of USAID in Jordan, and the assassinations of pro-American Kurdish leaders before the US invasion. For this they received money and weapons from Iraq and safe passage from Iran.
Zarqawi eventually came to run Ansar al Islam since Krekar was absentee.
After the US invasion his group took in more Baathists and more foreign jihadis and became al Qaeda in Iraq. After Saddam fell and was tried Zarqawi swore the bayat to bin Laden formally, and Saddam Hussein's VP and intel chief Izzat al Douri, the man originally behind the chem attacks in Halabja in the eighties and the invasion of Kuwait in 1990/1 even swore bayat, an oath of loyalty, to Zarqawi.
The insurgency heated up until Zarqawi took a dirt nap courtesy a US strike and al Dhouri went underground for a while, when another of his group took control of the organization.
Still later the organization became IS and ISIS and ISIL, al Dhouri has reappeared, and ISIS is using chem weapons against kurds again..