[Q] help with kernel installation please sprint htc one m8 topic

hi im incredibly sorry about this and i know im about to to post in the wrong place but i've recently rooted my sprint htc one m8 hk edition android 4.4.4 sense 6 and messed with roms and it was all very easy and straight forward however i started reading about kernels and got very interested and went and installed hypernova which is a flar 2 port and i went with that instead of flar due to flar not being supported by sprint htc one m8(may be ignorant but that seems to be a usual thing) either way im way in over my head have no idea how to customize this correctly and have turned my phone into the slowest piece of crap ever if any one can point me in the right direction of all the features of a kernel and how they work and how to set them up correctly i would love you forever bonus points if you can find a good kernel supported by my phone seriously though any help is greatly appreciated ill straight up pay you im finna cry over here mane