Q&A for How to Sign Up for Facebook

Yes, but do not use them for malicious or illegal purposes. If you want them be associated with each other, link them within each other's profiles and friend them.

Facebook uses your birthday to provide personalized celebratory notifications. This allows the platform to acknowledge the occasion and your friends to send you birthday wishes.

No, but it might seem suspicious if you don't provide one. If you don't use your account for a while, it will be more likely to get automatically disabled for suspicious inactivity. You don't have to use a real photo of yourself if you don't want to. The only rules are: you can't impersonate someone and can't use inappropriate or sexual photos.

No, you do not. Any valid email address will work for registration. However, be aware that temporary or "throwaway" email addresses may not be accepted or could be flagged as spam.

On your own posts, you can change these within your profile/privacy settings, you can choose whether you only want friends to comment on them or if you want everyone to. But if you are posting on someone else's page, you cannot control this.

Yes, it's like any other website where you can sell and buy other peoples' items, but make sure you sell stuff that other people would love to buy at a reasonable price.

No, it's not possible. You must create a Facebook account to buy or sell items on Marketplace. The good news is that signing up is free.

On Facebook's login screen, click "Create a Page for a celebrity, brand, or business" and then select "Business or Brand". You need to create your personal account first.