Advice for a new Macbook owner?

Well I finally took the plunge and bought a used Macbook off of a coworker. I did a fresh install of Mac OS X 10.5 and updated it to the latest version. Anyways, the reason I am posting is to see what advice ya'll can give me for never working with the Mac OS before. Any mandatory or cool programs I should get? Any certain set of tweaks should I apply to get the most out of it? Etc. Any and all help is appreciated!

Thanks again everyone!

Welcome MoNsTeR to M-F

Have a look at these for starters .....
Mac Switching 101
Mac 101
MacTricksAndTips ~ 100 Essential Mac Apps
Mac OS Keyboard Shortcuts
Mac OS Menu Bar Items
Mac downloads ~ Apple
Open Source for Mac ~ Free Mac software

So there is a bit of reading there. As i goes for Apps we dont know what you are into, but ill list a few that most people have and you can look them up in the 100 Essential Apps URL i gave ...

Adium ~ Chat Client
Growl Notifications
SuperDuper or CarbonCopyCloner ~ Both make bootable copies of your HD
HandBrake ~ Video Converting
Burn ~ As it says A Burning App
Transmission ~ p2p client
Skitch ~ Screen capture and more
VLC ~ Video player that plays most codecs and does a lot more
Perian and Flip4Mac Makes watching certain codecs easier ... This is Essential IMHO
Audacity ~ Play with Music App
CandyBar ~ Mods all your icons, and dock
MainMenu or Oynx ~ Does the same as Disk utility only more thorough
Quicksilver ~ Works like Spotlight but way way better and does so much more
StuffitExpander ~ Opens Zip and rar files and more
Lil Snitch ~ Firewall type App that looks at your incoming and outgoing traffic
and last but certainly not least .....
AppTrap ~ Once installed it sits in System Preferences and deletes all associated files of anything that you put in the trash ...

Should keep you busy for a while lol
Hope it helps some

Thank you TattooedMac!

Definitely have some raeding to do. ;D

YW mate ... The easiest and best way to actually learn the OS is to sit and play. I did this for a week before i really started to get into the computing side of it. Ended up doing a reinstall within the 1st week but it was worth it bc i learnt so bloody much just playing around .... Have fun with it to and be sure to drop back here if you have any particular questions

Cheers

Like some of the very first things we need to grab on a fresh Windows install - there are a couple you may as well get done right off the bat with your Mac - Flip4Mac, allows you to play those wmv files you run into on the web, and you only need the free one - Perian, it will play just about everything else. If you're use to using VLC in Windows, you may want to grab that also.

TattooedMac, that's alot of great info man!