And how do I get perks?
I'm so bad at this game... Haha.
Oh my. Have you never taken a perk? Then at level 19, you probably have quite a few available. The first perk in Smithing is pretty much a gimme - most of the first perks in any skill are, IIRC - and you should be able to take it regardless of where your current Smithing level is.
Every time you level up, you get to increase either your Health, Stamina, or Magicka... which you probably know already. But you also get the option to take one perk in any skill provided you have a high enough level in that skill to qualify for it.
Go into your skills menu when you are NOT leveling up, and you see all those little "constellations" with things like Archery, Alchemy, Smithing, Destruction, etc. underneath them? Each constellation contains the perks available in each skill, and each star in each constellation is one perk. The star at the bottom is the first perk, and can usually be taken right away. If you click on it and it doesn't let you take the perk, it means your level in that skill isn't high enough yet. Your current level and the required skill will be displayed when you are looking at the "star" to see what perk it's for.
Read here for more info:
http://www.uesp.net/wiki/Skyrim:Skills
Follow the links on that page for more detailed info on the perks and their requirements in the skills you want to focus on now, or have already leveled up in.