I basically want to do some youtube videos. So just cutting, basically. Maybe some effects. I'd like to be able to do at least 720p.
In the past I've used several trial version of commercial products and virtualdub.
..and the first post said FOSS and Windows.
The 'free' bit is the hard part. Gets you down to Avidemux and Virtualdub + some dubious ad-laced options. Just for cutting and joining I would go for Avidemux. Personally, I do not like Virtualdub but when it comes to effects then for both of those you need to look at Avisynth and another steep learning curve.
Someone mentioned Blender. That might be an option. I had a quick look at this explanation
https://www.youtube.com/watch?v=te9HFQVaSUE cuts and joins but could not see any effects.
For all you linux users, OpenShot I think is the best at the moment and you can get it as an appimage from their site.
Also as appimage, Shotcut and Flowblade from https://bintray.com/probono/AppImages/
Not for me, but give them a try.