At keast tell us at which firmware you are.
Basically if you have the right firmware you can:
- install Homebrew Launcher (you will only have access to some homebrew apps and emulators - EASY)
- install EmuNAND (you will be able to install unsigned .cia files which can contain games or homebrew and do some more cool stuff - MEDIUM)
- install Arm9LoaderHax (you will have every advantage of Homebrew Launcher and EmuNAND but your 2DS will boot faster, and by faster I mean that it would boot with almost the same speed as normal 2DS, than it would boot with just homebrew and EmuNAND because you will basically have access to arm9 at start of your 2DS, your 2DS will be almost brick-proof and Nintendo-proof too, you won't lose that much space as if you would lose with EmuNAND installed on your SD and you will have access to even more cool homebrew apps and you will have access to your whole 2DS NAND - MEDIUM/SLOWER AND LITTLE BIT HARDER TO DO, basically a little more annoying because of making backups and SD card swapping)