What does how you access (smartphone, laptop, desktop) Fluther, have to do with it?

If you want to ask how you do something in Fluther (eg. how to enter my topics of interest in my profile page) does it depend on what you’re using? If you’re using smartphone, this way? If you’re using a laptop you have to do it that way? Some people use different things at different times of the day. So, where are the instructions?