To see your current listings, you can go to Listings, and then Active Listings. From there you can filter your listings by sales channel and search on products to see the corresponding listings.
This screen displays your listings based on the last time you downloaded your listings. To get a fresh copy of your listings, you can go to Active Listings and click on the Download Listings button which will import a new batch of your active listings.
Within the Active Listing screen, you can submit price adjustments and if you click on the listing detail you can update additional attributes on the live listing and submit the revision.