What Affiliate networks are there where you can get started quickly?

I am currently looking for another affiliate marketing network where you can get started quickly without spending hours filling out forms. I recently signed up with Commission Junction, but there is a lot to fill out before you can get started. You can't start before you have filled out tax forms etc. With most companies you can fill out these forms later. What affiliate networks are there where you can start relatively quickly? What such providers have many campaigns?

What niche are you looking for offers in?

It depend on your promote method and your geo in which you perform

There's thousands of Affiliate Networks to join, don't just look at the "top 10 in USA" list.

Look for differente GEOs, in EU they have very few details needed before you can start running campaigns.

ClickBank is a popular affiliate network with a straightforward signup process. They offer a wide variety of digital products and have relatively minimal entry requirements.