Morocco is well worth a look, we spent 6 weeks there in the summer of 2000 and are going back ASAP. CS book is good for the desert routes, the Michelin map is topographically poor but OK for road routes, we were split between preferring Lonely Planet or Rough Guides and in the end took both. Tangier is fun but hassly, we headed on to Meknes, a fine place, good food, friendly people, then spent time in the various Atlas ranges (your navigation needs to be good here, some of the roads mentioned in the guide books were washed away by flash floods and havent been rebuilt yet - lots of river beds to be driven along! lots of lovely wild places and very few 'beaten tracks'), the Todra Gorge is worth seeing but be prepared for a saddening sight when you get to the southern end - hotels, Arabic grafitti and mess. The desert of course is wonderful but just be a little careful - we had a run in with Algerian gun-runners near the village of Tafraout and a guy who had followed us with his vehicle got serious heatstroke - go prepared! (That was high summer mind you). Marrakech is worth seeing - totally mad. I hear Essaouria is a fairly 'local' seaside resort, not been there. Casablanca is apparently quite industrial, again, not been. The Rif mountains in the north are lovely but watch who you talk to!
Super place. Enjoy
Take nothing but photographs, leave nothing but wheeltracks..... tread lightly.