1. Jorge se lo da.
The direct object refers to what receives the action of the verb. In this case (Jorge gives a gift to his mom), "gives" is the verb. What does Jorge deliver? A gift. Hence, the direct object is the gift. The indirect object is the person who gets the direct object. Who obtains the gift (the direct object)? Jorge's mom is therefore the indirect object.
To replace the direct object with a pronoun, you need to know its gender. "Regalo" is masculine, leading to the direct object pronoun "lo."
For the indirect object pronoun, you typically use "le." However, if "le" and "lo" are adjacent in a sentence, "le" changes to "se" (thus you would say "se lo" instead of "le lo").
2. Yo quiero dárselo.
In this sentence (I want to give a gift to my sister), the verb we focus on is "give." What is it that I want to provide? A gift (the direct object). To whom am I giving it? My sister (the indirect object).
As before, since "regalo" is masculine, the related pronoun becomes "lo," meaning the indirect object pronoun shifts from "le" to "se."
Is that the complete question? It seems unclear.
