<span style="font-family: arial, sans-serif; font-size: 12.8000001907349px; line-height: normal;">The Latest version of Gimp available for download is GIMP 2.8</span>
This Interface is made more convenient for the user, We can make the Interface as "Single Window mode" like Adobe Photoshop or like the old look "multiple windows."
We recommend to use the latest version GIMP 2.8
Regarding finding the options:
In the recent versions, mostly the tool box will be on the right and the remaining dialogs like Layers, Tool Options, Channels, History on the right. In older versions the tools options will be located below the tool bar.
We can customise the dialogs and keep where we want. Select the dialog box icon, then drag & drop on the place where you want (either left/right side of the canvas)