Ok, first of all, Attack and Defense.
Choose a number between 2 to 8 for your Attack, that would determine your damage in NBS.
To get Defense, take your Pool and deduct it by your Attack.
So for example you got 7 for Attack, your Defense would be 3 (since 10 - 7 = 3)
Your Health is your Pool + Defense. So if your Attack is 7 and your Defense is 3, your Health is 13 (since 10 + 3 = 13).
You start off with 2000 Jewels, 0 Streak, 0 Experience and no items.
If you have bought any items, deduct the price from the your Jewels and change your Pouch Slots accordingly.
So example:
This is an example
Minor Healing Vial which cost 90 Jewels and requires 1 slot of your Pouch, then you will have:
Jewels: 1800
Pouch Slots: 6 [left 5]
This should be your next step.