1. You can use QQ email directly. 2. Whether it is written in word or directly in the body of the email depends on the publishing house where you contributed. 3. Attachment means that when you send an email, you can add a file to your computer (if you write in word, click Attachment to add a word file to your computer). 4. If you want to contribute, you should generally mark "yes" on the subject when you write an email.