Sir I would say Tilengine is installed now 
If you SHIFT+Right Click on your Tilengine folder and click "Open command window here" and then type "install" and press Enter, you should see the results of the install command without the window closing quickly.
As for Visual Studio, well you should be able to Google that. If that's beyond you then I think you're after a kind of "game maker" program, like Game Maker Studio (which is very awesome btw). Tilengine however is a library you're meant to include into your own programming project.
If you SHIFT+Right Click on your Tilengine folder and click "Open command window here" and then type "install" and press Enter, you should see the results of the install command without the window closing quickly.
As for Visual Studio, well you should be able to Google that. If that's beyond you then I think you're after a kind of "game maker" program, like Game Maker Studio (which is very awesome btw). Tilengine however is a library you're meant to include into your own programming project.