There’s a lot to discover and to get used to in LF, far more than the making of the photo. I started with a monorail for around the house. I think that is a good introduction because you see what all the possibilities are for movements, Scheimpflug, etc. Then you also learn how to deal with all the practicalities, exposure calculation controlled for bellow length, managing filmholders, loading unloading, developing etc.
In fact everything else than a monorail are compromises and reductions from the complete idea of LF. Start broad, and specialize later if you know what you are looking for in LF. Unless you choose for the way your grandma uses a 4*5 of course, and aren’t interested in the whole spectrum. And she’s got friends who take over an important part of the whole process.