It's much simpler than it may seem. All you have to do is Recite the following prayer:
Lord Satan, by your grace, grant me, I pray thee the power to conceive in my mind and to execute that which I desire to do, the end which I would attain by thy help, O Mighty Satan, the one True God who livest and reignest forever and ever. I entreat thee to inspire [name of Demon] to manifest before me that he/she may give me true and faithful answer, so that I may accomplish my desired end, provided that it is proper to his/her office. This I respectfully and humbly ask in Your Name, Lord Satan, may you deem me worthy, Father.
http://www.angelfire.com/empire/serpentis666/HELP.html Here is a list of different topics and gods who can help you with these topics. After the prayer where you ask to talk to them, focus on their sigil and saying their name in your mind. You'll feel their energy and if you're open enough hear their voice too. Then just think to them like you're talking to them. You'll probably hear their answers in your thoughts, but if you don't they could come speak to you in a dream instead. You aren't nervous you're just excited, sometimes they feel the same.
They all love us, we're the children in their family. If they didn't all love us we wouldn't be here.