Spellpunk is a small modpack of a few key mods, all with great documentation. It still feels like Minecraft, but it spices it up enough that it is still fun!

For the explorers out there, you have Biomes O' Plenty and Repurposed Structures to make exploring more fun.

For the fighters there is Alex's Mobs. This add lots of new mobs to track down and kill

For the folks who enjoy the technical side of Minecraft, there is the create mod to make your contraptions more interesting.

For the builders, most of these mods have lots of new blocks that are just there for building.

Finally, for people who want to want to be wizards, you can look no further than Mana and Artifice.

Also, for all types of people, The Twilight Forest is in here too.

The most of the mods are "non invasive" so you can chose to ignore them if you wish. But they all have great D\documentation, so learning them is easy!

Mod list:

Antique Atlas
Alex's Mobs
AppleSkin
Biomes O' Plenty
Create
Just Enough Items (JEI)
Just Enough Resources (JER)
Mana and Artifice
Mouse Tweaks
Repurposed Structures (Forge)
The Twilight Forest
Shutup Experimental Settings!
Quark

Library Mods:

Citadel
Curios API (Forge)
GeckoLib
Patchouli
AutoRegLib