Save that password, it is the Owner Key (you can change it later)
1 - Fill username text box with the name of the account you want to create
2 - Fill the Steem text box with 0.100 (is what you will pay for the new account)
3 - Fill the Vest text box with 30000.000000 (this is the Vests you will delegate to the new account, about 15 SP)
Notes
Steem text box is 0.100 because it is the account_creation_fee value
Vest text box value is calculated based on this math: 5 * (1,000,000 / steem_per_mvests) * (account_creation_fee * 29.5)
and it can be more or less than 30000 Vests
account_creation_fee and steem_per_mvests can be found here https://steemdb.com as you can see on the image below