Sandy,

Its great that you are looking at such an important question. The concept of the trinity is not easy because it doesn’t seem to make sense. Yet the bible clearly talks about God as one being in three persons. It is a very common question and fortunately there are some really good answers to be found on www.christianity.net.au.

Have a look at

http://www.christianity.net.au/questions/are_father_son_and_holy_spirit_one_or_three/
http://www.christianity.net.au/questions/how_does_the_trinity_work/
http://www.christianity.net.au/questions/what_is_god_like/

If you have any more questions after reading these articles then please feel free to come back to the site and ask them.

cheers
David