lo and lo que
Could anyone please direct me to a page (preferably on SpanishDict.com, the stuff is explained really well here 
) about when to use lo and lo que?
Thanks,
espanol5555
2 Answers
Lo is an indirect object pronoun meaning any one of various things like it, him, or you.
However, it can also be a neuter article meaning "the," for example, when placed in front of an adjective (lo mejor = the best thing).
It is used as an article in "lo que" and is used usually where we use what or which.
Lo que deseas no está aquí. (What you want isn't here)
However, to help with what it really means, I found it useful to think of it like the older English construction "the which" (lo que literally means "the that").
What you want isn't here ? The which you want isn't here ? Lo que deseas no está aquí.
.
Of the which the half has not been told ? De lo que la mitad no se ha dicho
.
If the thing you're referring to has a known gender, you might use la que or el que.
That's the bucket in (the) which I put the water ? Eso es el cubo en el que he puesto el agua.
.
That's the city which I'm travelling to. ? That's the city to (the) which I'm travelling. ? Esa es la cuidad a la que estoy viajando.
.
English no longer uses "the which" (which is why I put "the" in parentheses in the examples above), but you can still find it in older literature (my familiarity with it arose from reading the King James version of the Bible since I was a young boy).
But comparing the lo que construction to the the which construction just really helped me wrap my head around the idea that phrases like "lo que deseas" literally meant "the that you want" (even though we translate them as "what you want" or "which you want").
Here is one. 
