Adding a picture can be in an attachment or in Google Drive. The pin icon can be used to add attachment. The picture icon can be used for Drive.
Install Gmail on your laptop and attach the picture from withing gmail.
You cannot turn off ads in Gmail. It is the main source of income for Gmail. If more ads appear, you can use ad-blocker for that.
You can get a picture for your gmail account easily.. It is preferred that you use your own picture. This is because other users can identify you.
You need to login in order to view the picture. The picture is stored inside the Gmail account. You need to know where in the mail is the picture stored.
You could include a picture as a part of attachment in gmail. It could be at max 25 MB or you could use drive. Gmail also sends it as a link to the drive for safe purpose.
You can put GIF file in Gmail picture. You can attach the picture from you local drives. You can also upload the image automatically if it is in your Google Drive.
Its the same picture as your gmail account so change the photo on there
No, gmail is not bad. It is convenient when you want to access your email from other computers.
You can decorate your profile on Gmail. You can add themes to your account. A Custom wallpaper could also be added.
you have to pay me million dollors
No, you can't make an avatar. It's just an emailing system. So, u can make avatars on yahoo!!
You can log out gmail from top right icon. It generally contains your profile picture. Click on that and you could see sign out.