assuming your compatent with a computer and basic mod functions here you go
the eastern sun mod i feel finishes the d2 exprience nicely and is great if you have never played d2 before and even if you have played before its great fun.
the mod fixes alot of problems with alot of classes and is not directly pvp focused !!!
this means that classes are diffrent but balanced around pvm and not pvp as much and dispite the great amount of changes it makes its still d2 at the shell just polished to a great shine.
there are other great d2 mods but those are often diffrent games and while that is not bad i feel that eastern sun offers a more complete diablo 2 package as the crafting even if only doing normal mode is worth it and can give you some nice bonus's all of the mercs are intresting and they made gold useful in eastern sun. something no other d2 mod i see seems to have accomplished.