Board Thread:General Discussion/@comment-24548292-20140313022120/@comment-79.68.185.220-20170612152603

Using the black book infinite magicka greater power, and telekinesis, fast travelling from Riften to Markarth while holding any item with the spell, will pretty much level up Alteration from level 15 to 100 in one go. Takes about ten seconds a trip on PC, probably an hour on a crappy console.

Either way, it's the easiest way to reach the perk point cap "legitimately" but it's fairly pointless - enemies stop level scaling at 150.