[loupgaroublond]

IDE's are a bit of a closed off garden, to use a bad metaphor. They provide all the components you need, editors, terminals, shortcuts to run commands, but when you learn that you can choose between using an IDE or building up a toolset on your own, then you can make a better choice for the job at hand. There are some really good IDEs out there and once you learn both, it's personal preference. I certainly use both depending on the task.

/bin and /sbin - binary files go here, namely programs /lib - all the shared libraries and other code that gets executed by programs /libexec - other kinds of executables that are not shared libraries or command line programs /src - source code /src/include - all your C headers /share - shared resources, data, game data, pictures, wallpaper, icons etc... /share/doc - documentation /var - runtime data, log files

So what's /usr? These resources get split between / and /usr for historical reasons. There's a push to put everything in /usr and get rid of the split. Go look it up if you want to know why it's this way.

The thing to notice here is there are no program specific directories at the top level. This is because all programs are thought of as small tools or cogs that you can build larger tools upon. It's a system, not a way to run a couple of different apps in their own sandbox.