Hey,
I am also new, and training for my first Olympic tri in May. From what I have found, the easiest way to check times is to look at previous year times. It can give you a good idea. The race I am doing has last years times on their website which is handy.
I am just training on my own. A coach would be overkill for me.
I also found this site, which has some great training ideas etc
http://www.beginnertriathlete.com/default.asp
GL