Hummm... Have you gone to File NEW... and created a New Project...?
And then there is no tile set....?
If so go into the Database and click tile set, do any tiles sets appear ?
If they do appear... Go back out of the Database, and in the lower Left hand corner of the screen you will see a brown folder, right click it and go New Map... That should give you the options to add the tile sets...
If you don't have any maps in your Tile set area in the Database you may need to find a better link... or try installing the Trial version from
www.downloads.com and then copying the folders over to your downloaded version replacing any thing thats missing.