Board Thread:Skyrim/@comment-12277465-20140327075656/@comment-29461586-20140327080212

Try the Climates of Skyrim as well. For realistic sounds in environments, try the Sounds of Skyrim - The Wilds.

For perk and skill tree overhauls, try Skyrim Perk Enchancement and Rebalanced Gameplay(SPERG) in Nexus.

A sidenote, you also need the latest version of SKSE for some mods to work. Also, SPERG needs the Skyrim Community Uncapper, which can also be found in the Nexus site.

I almost forgot. Don't forget to get BOSS. BOSS is a mod load sorter that really helps prevent mod conflicts. :)