I need to free up space to download apps. What action do recommend?

Dear Support,

I need to free up space on my Fairphone 1 to download new applications. For an unclear reason I am not able to manage this properly. Do you have instruction and/or suggestions I can follow to clear my phone memory with out of date information. And can your explain how to make better us of the SD-card on my phone, as I purchased it to overcome the capacity problem.

Thanks in advance for your time and willingnes to find a solution for me.

Regards,

Peter Burgers