While I agree with fable to an extent, anyone going directly from Skyrim to Morrowind will, 99 times out of a hundred, be absolutely disgusted with the vanilla graphics. Graphics improving mods are not generally classified as bugfixes, which is why I felt fable's suggestion was rather misleading.
If you are looking for an all-in-one graphics enhancement, do try http://www.gamesas.com/topic/1319942-relz-morrowind-overhaul-sounds-graphics-20/page__st__210. You will find other excellent mods on http://www.gamesas.com/topic/1305729-mod-recommendations-for-new-players/.
I do agree with fable about mods which add new locations and quests. You will get a better idea of what Morrowind the game is without them, as well as gaining a better appreciation of the accomplishments of the modders when you see what it was like before mods.
Fable's suggestion is nothing wrong with. I find it misleading to name graphic improvements as bugfixes, as they aren't. I would first play Morrowind straight out of the box, vanilla that is. Also without any graphic mods. Otherwise you never know how Morrowind looks like originally. Let anyone decide itself if the graphics are ugly or not. It's a matter of personal taste. I find them myself not bad. Next to that graphics aren't that important. Gameplay it is all about.
Skyrim was my first TES game, now i want wo start over and give morrowind and oblivion a try.
Would sombody be so kind to list a number of mods i should use?
Wich graphic extender is best for wich game?
Thank you
Don't use any graphic extenders yet. Play the games first vanilla, just as they are intended. I only suggest to use the unofficial patches for the games.
For Morrowind you want to grab Morrowind Code Patch and Morrowind Patch Project. For Oblivion it's Unofficial Oblivion patch, Unofficla oblivion patch supplemental, Unoffcial official mods patch and unofficial shivering isles patch.
Those unofficial fixes fix things that were left behind after the official patches, such as the falling orc in Skingrad and the magister bug in House Telvanni.