Well... Just buy an FMCB'ed MemoryCard! I suggest an original one from Sony. They are usually at ~10$/€, but sometimes original MCs or officially licensed MCs are already available for 6.50$ in some places.I have both but my PS2 isn't modded (I don't know how to do that).
Some 64MB-China-Clones are available for just 3.50$ (Yes , including postage! Lol), but they might have issues with some games (not a big deal, if you use Virtual MCs/VMC, tho'.)
Btw: Ai, no problem (that you are a noob)!
I mean... It is noticeable, but you are here to learn, so that's fine.
But it is just... erm... nice... to read the stuff thoroughly! The people who are writing these answers are human beings as well and they are investing life-time to help you, so if question can be avoided, because they are answered without a doubt, that's a good thing... More free time for other things, like helping other people... It's a bit about efficiency, you know?