Someone was missing Yuda the Elder Trainer from Oblivion so.:

Yuri is waiting for you at The Bannered Mare of Whiterun.

She acts as a Master Trainer for any skill.
She can be your companion or your wife if you wish to.

http://skyrim.nexusmods.com/mods/36491/

PS: Yuri uses the same training system than vanilla Skyrim and has the same vanilla restrictions ( 5 training sessions per level, up to skill level 90 ).
If you're looking for a trainer that works differently and with more capabilities, you might want to look at "http://skyrim.nexusmods.com/mods/16083/"