@based05 if you haven't done so already you should install homemenuhax. The installer comes packaged with the starter kit you should have gotten with the homebrew launcher. You have your choices of cfw. I recommend either rxtools or luma. Each are setup differently so you should start a 'ask' topic specificly for "setting up (cfw of your choice) emunand to auto launch via homemenuhax". (To avoid this bullshit), also ask how to modify the payload to rename the cfw launcher to something other then boot.3dsx.
Once you have cfw setup, use the the homebrew launcher version of fbi installer to install the cia version of fbi. That will put the cia installer in your homemenu. Use that to install any games or software.