How to get my iphone 3GS Jailbroken?

I have Iphone 3GS Updated 6.1.3
i want to jailbreak it and i want that cydia app:-/ but have no idea how to do this. My first experience with apple:-/ help?

Trying to activate my at&t gsm Iphone into straight talk services?

So I'm on the site where you activate the sim card and where your supposed to put the Serial Number/ MEID/ DEC in but above it says ''If you have an iPhone that you bought at Walmart or through our online store, please enter your MEID'' clearly i didn't buy the iphone threw walmart or their online store its obviously like i said an at&t gsm do I still enter the meid serial code will it still work?

IOS 7 Official Firmware Now Works? When available for download?

I have always felt iOS 7 firmware is the best system ever, I love Apple, and now have installed iOS 7 beta on my iPhone, iPad and iPod touch. I heard that iOS 7 official version will be released in September, I want to know the specific time, that is when we can download the official version of the iOS 7 firmware first time.

If I jailbreak could I downgrade?

I recently updated my iPhone 4S to 6.1.3 and I want to downgrade back to 6.0.1 if I jailbreak could I down grade only reson I wanted the old firmware is because its unlocked to tmobile and the unlock only works for that firmware I recently found that out now I have no service so if I jailbreak could I downgrade back

Messages app not working on iPhone?

The messages app on my iphone 5 keeps crashing when I open it.
I have wiped my phone completely, and then restored it and it still does the same thing.
I have tried a hard reset and it still does it.
I don't know what else to do, any other suggestions?

What will my dog turn out like?

I have a puppy who's 50% rottie 25% American bulldog and 25% Neapolitan mastiff I've searched all details regarding both breeds an have been trying to determine HER ultimate size, temperament an guarding ability I'm hoping she gets big an guards the place but I love her an what ever size An temperment i always will she was the biggest of the litter an weighted around 7-8kgs at 7-8 weeks she's being fed and looked after very well, walked every night 10mins for every month of age since vaccinations kicked in being fed proper puppy food an also she suffers from submissive urination when strangers come over I'm hoping she will get over this a be a good guard dog cause ATM she's just 13-14 weeks an I think that's to be expected I don't yell at her when she does it or praise her I just try to ignore it that's what all the instructions I've found say sorry punctuations a nightmare I'm on an iPhone an its hard enough writing this essay

What pre-paid service does Sprint use?

I bought an iPhone 4 for the sprint network and I was wondering what pre-paid service I need and how to activate. I think it's Boost Mobile but I'm not positive.

My iphone 4 won't connect to my home Wi-Fi? - 2

I have a iphone 4 (with no sim card) and tonight my phone froze (which happens sometimes for me) and i did the holding to home and power button which i always do but this time it wasn't connecting to my Wi-Fi and i tried to put in the password a couple of times and then i reset my network setting and tried a lot more times but it still says unable to connect and the little Wi-Fi symbol is all blacked out and i don't remember it being black, and my laptop is desktop is connected and i've turned my router on and off