iCal won't sync with iPhone

Hi,

I am having a similar problem as others but I cannot understand all of the directions given.

There are many different sets of directions and not sure which to follow. Not only that, a user will say to go to a particular folder and I have no idea where to find that folder.

I have 10.8.2. I recently purchased an Air (had a Pro before) and now my calendar never syncs so what is on my phone never transfers to my calendar, thus making my calendar useless.

If you're going to give directions, please go step by step. Although I am not computer illiterate, I seem to have a hard time figuring out what everyone else seems to get immediately! Rather than say, find folder abc, please tell me where that folder is, how to find it, etc..... basically, I need baby steps!

Thought this would be easier, sorry for any inconvenience!

Please help. Have been trying to resolve this for some time.