How to update Apple iBook laptop?

I believe I have an Apple iBook. & I think it's a 2007? I'm not familiar with this laptop, it was bought used & as far as Apple, I've owned an iPhone & an iPod touch which I no longer have & I'm new to Mac. When I open the About This Mac window it reads:
Mac OS x
Version 10.4.11
Processor 900 MHz PowerPC G3
Memory 640 MB SDRAM
It also has a Startup Disk
I do not have internet where I'm, if it's needed, but I do have a Galaxy Exhibit phone with Metro pcs, i don't know if maybe a connection could be shared. If so, how would I go about that.
I wanted to know if this laptop is up-to-date, or if it needs to be updated. & How I can access Other Accounts: test, which is labeled Admin. I wasn't given the password. Thank you in advance. I hope I made sense of this or that someone understands what I'm explaining.

Procedure to PROPERLY backup iPhone on iTunes on PC?

Hi, I just had a Hard Drive tank on my PC -now up& running again, but lost my data on the original drive I have briefly looked at the procedure online on how to re-install iTunes on the PC and then basically back-sync the contents back onto my PC.
I was wondering if anyone that was real sync-savvy would just explain to me the direction that I should have in the iTunes settings before I connect the phone back onto the PC, with safeguard in mind so I don't screw up. I have had some friends lose everything when they synced their phone to a fresh install of iTunes.
It would appear that I do have my iCloud settings properly in place as an alternative, but I feel better if I also have a local copy of my phone as well.

Also, as I dare to ask… Is there any feasible way as of yet to say, if a friend emails me a mp3 song, etc. To my phone, that I can just add it to the phone without docking to the PC/iTunes method? I know, probably a cardinal sin to even ask, haha.

Any tips and tricks appreciated!

How to receive iMessages still on an old iPhone not in use?

I was wondering if it would be possible to still somehow activate an old iPhone to receive texts. The story is, my boyfriend upgraded to an iPhone 5, he left his iPhone 4s at my house about a month a go now. & he's been acting shady. Is there a way I could still receive texts sent to him on this old phone? He has the same number. Or is there a way to receive his texts knowing his Apple ID? Any help would be great!

Anyone has issues with iPhone 5s data service?

I'm not talking about the carrier signal. I'm talking about the data package service that you subscribe to. My 5s is just 2 weeks old and the 3G service just decides to go off on it's own. I can only text and make/receive calls I can't surf the internet / use whatsapp etc…

Does anyone experience this problem?

PS. This happens especially whenever i restart my phone.

what can i do to solve this issue?

Instagram new update for iphone 5 iOS 7.1?

So Instagram got update again! I lost followers and followings, my followers were 248 and now there 223. My following were 198 and now there 170. Why is this happening?

How to switch files? IPhone to iPhone?

Okay, so, my mum and I are switching phones, and we would like to transfer our files to our new phones. How do i do that? Oh and this is urgent, so, please help me?

How to extreme coupon in PA?

I'm from Pennsylvania and I currently live at home and attend community college but this fall I will be getting my own place and transferring to university. The cost of my rent and tuition will be a lot to balance so I would like to learn how to extreme coupon for things like food, paper products, cleaning supplies, laundry detergent, dish detergent, body wash, shampoo, etc. I also have an iPhone, so if anybody knows of any coupon apps let me know!

What's the best iphone app for sports and why?

If I want to check how my teams are doing what's the best app for that?

Thanks for your help!

Added (1). I watch N. American sports and I want 1 app where I can see baseball, football, hockey, etc.