I do not ever ask my husband about savings that he make and do not interfere in any financial decisions that he makes... am I doing it right, or I should start participating in where he is putting money and all? As I have seen my friends know where each and every penny of what their husband earns is going.

you can ask him as you are both partners and should be aware of the income that comes in to the family. this will help both of you plan well and save too. talk to him nicely, in such a way that he doesn't feel you are questioning him. tell him that you want to know because you are interested in saving for the home and also budget accordingly.