Go to 'Make a Tweenie' on the left. There, you can purchase items, then use those items to make your tweenie.
And you can talk about anything here, as long as it is appropriate. You can read the rules
here.
Tell me if you need any more help.
Anyway, welcome!
Be sure to read the rules/FAQs. You can ask me or any other staff member (Mod, SuperMod, Admin) if you have any questions that aren't listed there.
Have fun!