SQL server Management studio express

Question

Hai all....

I am a begineer in SSMS......

1--->With windows authentication mode i could easily get into the server....but wat should i give in uid and pwd of my connection statement in the program ............

2--->wat is the step to create a new login with all the credentials and i also want to create a new database where the owner is the login which i am gonna create.....

Any suggestion or materials reffered would be a great help to me....