Use of direct and indirect object pronouns

In the sentence Te lo voy a dar/ I'm going to give it to you. Is it true that you can use the direct and indirect object pronouns in one of three places? Either before the conjugated verb voy after the infinitive dar or if there is a word ending in ndo (ing) word, after the ndo word? I know that the indirect object pronoun always goes before the direct object pronoun. And that the se word is formed when the words Le and les go before the words lo, la, los and las. So my question is why am I having so much trouble forming senences when using the flashcards? Is there some rule that I'm missing? I'm starting to get them now but how in the world are you supposed to break down a sentence in your mind before you say it?

 And the sentence “se la servimos a él/ we serve it to him. What determines the gender of the la word since verbs are neither male or female? And with the sentence ”Gabriela quiere dárselo a María /Gabriela wants to give it to Maria", how do you get the word lo instead of la, when two females are being spoken about?

The exercises can sometimes be frustrating because there are often more than one correct answer, but they only accept one as an answer. That is a limitation of the software currently (maybe someday!)  but they do give you clues in some of the exercises by putting a note in the upper right corner with the LIT label. If you hover over it, it will tell you what they are looking for. In indirect/direct pronouns, they will tell you if they are looking for the pronoun after ndo or the infinitve with a clue that looks like “to give + it”. No clue means they are looking for it in front of the verb.

Hope that helps!

Yeah Scott, that does help. I saw the little notation in the upper right corner but I didnt realize that if you hovered over it, it would give you the information needed. So yes, thank you!