If you’re actively trying to improve your Spanish, getting a little bit of practice every day is an extremely effective way of doing that. For anyone who’s already in the habit of checking Instagram at least once a day, it’s a great place to get that regular Spanish fix, without evening thinking about it.
There are loads of Instagram profiles that claim to help you learn Spanish but not all of them are genuinely useful. In fact a lot of them are quite pointless. I did a thorough search around Instagram and these are the ones I think are most useful.