Asset: Unify asset file management

First go to http://drupal.org/project/asset and download the asset module. Extract the asset folder and drop that into your /sites/all/modules/ folder. Now, go to Administer>Site building>modules and enable the asset module by checking the box next to “asset” and click submit.

Next go to Administer>Site configuration>Input formats and click the 'configure' link next to Filtered HTML. Under 'Filters', check the box next to “Inline file assets” and push “Save configuration”.

Now go to Create content>Page or Story. To embed an asset, like an image, click “Insert Assets” under the body input field.

Then the “Asset Wizard” should popup. You can upload a new asset by clicking “Upload”.

Follow through the steps (upload file, title it, pick display settings). When you finish the steps there should be a line in the body field like this [asset|aid=2|format=image|formatter=asset|title=SomeImage|width=2816|height=2112|align=none|resizable=true]
(actual text will vary depending on settings). Then click the “Submit” button and you should see your asset displayed.