Its been about a month with my first MAC. I was wondering is there a system tools on this? My old PC had disk defray and erasing cookies etc. What are some things you do to keep your MAC running its optimum ability? Thanks in advance.
First, it's "Mac" not "MAC", which stands for something completely different (check it out on Google).
Next, aside from the System Preference panes, there is Disk Utility located in the Applications/Utilities folder, used to partition verify and repair disks or to repair the disk permissions. The freeware Oynx, can run maintenance scripts, etc. In general OSX does all the necessary maintenance, the user doesn't have to worry about it much. Flash installers are famous for screwing up file permissions, and some other installers do too, so you can use DU to repair them after installing something if you like.
I have no idea what the "disk defray" you mentioned is, but it doesn't sound good.

You didn't mean disk defragmentation by chance? OSX takes care of that pretty well and doesn't suffer from fragmentation like older file systems, so unless you are doing serious video editing or the like you can ignore it. Cookie management can be problematic, it is hard to tell which are necessary and which are useless garbage. There are ways to delete them etc. Try searching for related threads if you are concerned about them.
In conclusion, relax, having a Mac is much les stressful than running windows!