The full sequence needed for accessing and reading DRM (Digital Rights Management, MDR?) books is:
Needed just once to set things up.
- Get the Adobe account ID (as you have already done)
- Register this account with your copy of ADE (Adeobe Digital Editions).
If you have already used ADE without registering, it will have set up a rather unhelpful 'anonymous' account.
You may need to deregister that using ctrl-shift-D (cmd-shift-D on Mac), restart ADE, and then register your real new adobe ID with ADE. - Register the Kobo Touch with your Adobe ID. Plug it in using USB, start ADE, and ADE should ask if you want to register it.
If it doesn't, you may need to use the Library menu on ADE, and choose 'Register Device'.
If the device is somehow already registered with a different ID, you will need to deregister the device using ctrl-shift-E (cmd-shift-E on Mac) to ADE with the device plugged in. Then restart ADE, and register the device.
For each book, you will need to
- Download the .acsm file (from library or bookstore or ...)
- Open it in ADE so that ADE downloads the DRM .epub file.
You can't open a .acsm with ADE File open (ctrl-O). Either associate .acsm with ADE so it opens automatically, or drag-drop the .acsm file onto ADE. - Now drag-drop within ADE onto the Kobo device to copy the file.
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There may be one problem. Once you access a .acsm file with a given AdobeID, it can no longer be used on any other ID.
If you open a .acsm file using ADE while ADE is registered with an anonymous account (as mentioned in step 2 at the top),
the book will then become associated with that anonymous ID.
You can't use that anonymous ID on any other device and you won't be able to read the book on any other device.