If you managed to create a tab, you're almost there. But of course module view will be necessary for the tab to be able to point to. So yes, you need a module and view(s). You would probably at least need views like browse and edit. Deletion and adding_blank can usually be combined within browse view, but that's up to your preferences.
If you plan more than one view, you may want to create a left-side menu for that tab. This is defined in the module.php, the definition file for your module, with the following line for each view array:
