Default Q: Zopo 980+ Boot Loop

Hello everyone,

I would kindly ask for your help with my mobile I got the zp980+ octacore version 2gb ram, 16gb rom. Today I installed an app and it needed a restart. It got it into a boot loop and im realy new to android. I'm afraid I'l get it into a full bricked phone if I do something wrong. Can anyone explain what I have to do, or post me a link with some tips and tricks.

Thanks in advance