What recording software should I use to capture PC gameplay?

I want to start a gaming let's play channel on YouTube, and I'm wondering, which capture software should I use to record PC gameplay videos? I use a Windows 8.1 PC that has a resolution of 1920x1080, is a 64-bit operating system, and has an installed memory of 8.00 GB (7.81 GB of which is usable). I'm planning to record videos of games such as Minecraft, Skyrim, Terraria, etc, so I will need a recording software that is compatible with my PC and with the games I want to record. Also, I would prefer a capture software that is relatively easy to use.

I use 'Fraps'. It seems to be a decent programme.

You might also try 'Dxtory'. I have heard it works well also.

You can record with Bandicam - it has a mode for recording your desktop applications, such as RPG Maker games, and another mode for recording DirectX/OpenGL games.