This section will go through the steps for editing the DVD with the standard version of DvdReMake. If you're using the Pro version, but would still like to follow along, just make sure you're working in Easy Mode by clicking the fourth button from the right on the toolbar.
Import the DVD files by clicking the button on the far left side of the toolbar. It will take a few seconds for DRM to read the IFO files, and then you'll get a window like the one shown on the right. The left pane of the window is the DVD Tree, and it works similarly to Windows Explorer.
Clicking the + next to an entry will expand it to show other entries. When they're expanded, the + will change to a - and you can collapse them back to the root entry by clicking that. The size of the DVD after any changes you've made is shown at the top of the right column (Size), and that same column will display the size of individual items as well.
The Interface
You may have noticed that the majority of the items listed in the DVD Tree say Video Title Set followed by a number. These correspond to the VTS_xx_n.xxx files on the DVD. For example, Video Title Set 1 refers to the set of files whose names start with VTS_01 (VTS_01_0.BUP, VTS_01_0.IFO, VTS_01_0.VOB, and VTS_01_1.VOB). If you expand that item you'll see an entry for Menus en, which represents the menus contained in that VTS (Video Title Set).
If there were menus in other languages, there would be other entries like Menus FR (for French) or Menus ES (for Spanish). Above the Video Title Sets is another item that says Video Manager. This represents the contents of the VIDEO_TS.BUP, VIDEO_TS.IFO, and VIDEO_TS.VOB files. Like the Video Title Sets, expanding this item will reveal Menus en, representing menus in English.
You can also determine the size of any of these items by looking at the column to the right of the name. At the top of this column is the total size for the disc, which will be red if it's too big to fit on a single blank disc, or green if it will fit.
When you have the Video Manager item or any Video Title Set or Menus en items selected in the DVD Tree, the right side of the screen will show you another piece of DRM's interface - the Domain Content Pane. At the top is the Blocks List, which shows you the individual programs (chapters in the titles) and menus that have video associated with them. In DRM terms these are referred to as blocks. Below that is the Block Preview, which displays the video for whatever block is currently selected in the Blocks List.
When previewing a block in DRM there is no option to preview the audio, which is one reason I recommend previewing every title in DVD Shrink.