maintenance lion

Not really.

Mac OS X take cares of that and many other maintenance for you without you having to worry. No need to defrag really on a mac, it automatically defrags files 20gb or less. As a mac newbie, you should find these articles helpful: http://www.apple.com/support/switch101/, http://www.apple.com/support/mac101/

you are welcome, enjoy your mac 🙂

I would suggest that you get yourself an external

hard drive and set it up as either a Time Machine

backup or a bootable clone. Hard disks can fail

and stuff can just plain happen.

Time Machine will incrementally save canges to

your disk as you use it and it can give you the

ability to "go back in time" to a point before things

went awry.

A clone, which is one big advantage of Mac over PC,

is a copy of your internal hard drive and you can boot

from it just as you would the internal drive. This has the

advantage of being able to get back up and running

immediately if there is some form of internal drive failure.

Which method you choose (some actually do both) depends

on how quickly you need to get up and running. The one

advantage of the clone method, is that you can install any

updates to system or software on it and test before commiting

the changes to your main drive.

FWIW, see:

Mac Maintenance Quick Assist,
Mac OS X speed FAQ,
Speeding up Macs,
Macintosh OS X Routine Maintenance,
Essential Mac Maintenance: Get set up,
Essential Mac Maintenance: Rev up your routines,
Maintaining OS X,
Five Mac maintenance myths, and
Myths of required versus not required maintenance for Mac OS X for information.

Once that's out of the way, see these:

Switching from Windows to Mac OS X,
Basic Tutorials on using a Mac,
Mac 101: Mac Essentials,
Mac OS X keyboard shortcuts,
Anatomy of a Mac,
MacTips,
Switching to Mac Superguide, and
Switching to the Mac: The Missing Manual, Lion Edition

Additionally, *Texas Mac Man* recommends:

Quick Assist,
Welcome to the Switch To A Mac Guides,
Take Control E-books, and
A guide for switching to a Mac.