If you're looking for general help on Construct 2, try the manual front page. This page describes the About dialog.
The About dialog contains the following information:
Release number (e.g. Release 70)
Construct 2 does not use the a.b.c version numbering system. Instead, the version is simply a number which increments by 1 every time a new release is published. You should stay up to date with the latest version for the most features, best performance and most reliable stability.
Release architecture (32-bit or 64-bit)
This determines whether you are using the 32-bit or 64-bit version of Construct 2. If you're using a 64-bit computer it's recommended to install the 64-bit version, unless you are using a portable installation. See Installing Construct 2 for more information.
Following the release number and architecture may optionally be the word checked. Checked builds are generally for testing and you may occasionally see check failure dialogs which indicate a possible bug or problem. You should report any such issues to Scirra.
If the word checked does not appear, it indicates a release version of Construct 2, which is a stable build intended for day-to-day usage.
The date and time the Construct 2 executable was compiled by Scirra is included. This is occasionally used by Scirra for diagnostic purposes.
This section outlines your graphics card and its basic capabilities.
It is important to keep your graphics card drivers up to date. Many common display glitches (e.g. objects not appearing or having sections cut off) are caused by buggy, out of date drivers. Updating to the latest version released by your graphics card vendor often fixes these problems. If you haven't done before since installing Construct 2, we recommend you click the Check for driver update link and try updating your drivers. You may need administrator permissions and have to reboot your computer.
This contains the license information if a license has been purchased. See Using a license for more information.
Lists all the individuals and organisations whose work has been involved in the creation of Construct 2.