(And sorry for the unusually poor picture quality. All the lights hit the screen for me, so it was difficult to get to the really bright and nice pictures).
This is the starting screen of Instagram. At the top you have two options; Sign up or Log In.
We will Sign Up, so make sure it is selected (the small white arrow should be under the text).
Click (dabbing with your finger) Enter your e-mail. Then you get the keyboard and can type in your email address.
If you prefer to use Facebook as login, click Log in with Facebook. You will then receive login using your facebook account and can jump a bit down in this text.
For safety, I have not taken photos of the following steps, but it is not so difficult.
Once you have entered your email address you’ll see a small blue text that says Next. Click on it.
Enter your name, if you want. This is not mandatory, so you can skip this if you want. Click Next.
Time for a username. This is the name that will appear on your account. If it is completely wrong or if you want to change it sometime in the future, you can do this without any problems. Click Next when you are done. (if your username is already taken it says so just below the field).
A good password is one that is not directly associated with you and it gladly contain a few numbers or other characters (!? # &)
When you come to this screen it’s time for a profile picture. The profile picture is round and appears next to your username. You have several ways to choose a picture, choose the way that suits you best.
I selected to upload a photo (Choose from Library), but if you what to select one from Facebook, or take a picture here and now it goes equally well.
You can move the picture to focus on what you want as your profile picture. The profile picture can be replaced as easily as on Facebook if you change your mind and want another later.
When you are satisfied with the image, click on the blue check mark on the top right to move forward.
Instagram also want to check your contacts in the phone, but here you can select Skip also if you want.
How to upload your own pictures, write text, etc. you find in the next step.