Generally,
- If you focus on weaponskills (they all use Stamina (exception being the Staves) you want to go for medium armor since that benefits stamina the most.
- If you want to focus on class skills or Staff skills (they use magicka) you should focus on light armor since light armor benefits magicka and its regeneration.
- If you want to tank > heavy armor.
Generally,
- If you focus on weaponskills (they all use Stamina (exception being the Staves) you want to go for medium armor since that benefits stamina the most.
- If you want to focus on class skills or Staff skills (they use magicka) you should focus on light armor since light armor benefits magicka and its regeneration.
- If you want to tank > heavy armor.
Probably also worth pointing out that until you actually spend skill points on armour, there is no real difference in the white quality ones other than armour value. Of course you will level up more quickly by wearing more of the armour you want to eventually spend points on, but if you don't plan on doing that for a while, you may as well wear a mix.