A couple Questions

[Obeliske]

Ah ok cool I've been stealthing in a half/half zone (I can't remember which one but it's lvl 10 on one side and 20 on the other) the warp in crystal is on the lvl 20 side so popping out of it and trying to look around for stuff has repeatedly ended up with me dieing so I was kind of wondering :P Thank you

How do I edit my profile picture in these forums? I took a look at the my profile at the top there but there's almost no options in there for anything other than a bio and to select my character (which I have already done and isn't actually saying what my levels are properly :P).

When I do the quest to have a choco companion fight with me according to the wiki I need to be in an FC with a stable to train him and while he's there I can't use him for anything... How exactly does that work? Do I just jam him in and forget about him for a few weeks or what?? If he's stuck in there how do I fight with him?

[Keydah]

How do I edit my profile picture in these forums? I took a look at the my profile at the top there but there's almost no options in there for anything other than a bio and to select my character (which I have already done and isn't actually saying what my levels are properly :P).

Your profile picture is an image of your character's head, pulled from the lodestone - there's no avatars on the forums. Right now, it's April Fools, so everyone has special Hildibrand questline (level 50 side story quests...all comedic relief) people as their avatars.

When I do the quest to have a choco companion fight with me according to the wiki I need to be in an FC with a stable to train him and while he's there I can't use him for anything... How exactly does that work? Do I just jam him in and forget about him for a few weeks or what?? If he's stuck in there how do I fight with him?

There is a quest in Camp Tranquil after level 30 that you do to be able to summon your chocobo companion. The quest is "My Feisty Little Chocobo" from Docette.
After you've unlocked the ability to summon your chocobo, you will need to buy Gysahl Greens to use every time you want to summon them. Each time will consume one, and you'll have your choco for half an hour before you need to resummon.

Gysahl Green vendors (select "Purchase Tools):
Ul'dah: Roarich <Independent Importer> - on the Ruby Road Exchange beside the Adventurer's Guild
Gridania: Maisenta <Black Rabbit Trader> - a stall to the west of the main aetheryte
Limsa: Bango Zango <Brugaire Consortium> - right in the aetheryte plaza, easy to find

You need an FC stable to train them (give chunks of exp through feeding - which you get exp through battle, so it's not necessary - or change favorite food), yes, but the ONLY thing that does is give them exp without having to battle (or a boost if a special food becomes their favorite) training is nothing special nor is it required.

The only thing you need a stable for is feeding for exp/boosts and changing his color (semi-expensive fruit or gardening, which also requires an FC or personal house). When he's in an FC stable, you cannot summon him until you remove him. You can stable, feed, remove immediately, repeat in an hour. They can be fed once per hour (plus another feeding from another player) for exp, which takes immediate effect. If you were to stable them and leave them there, nothing at all would happen - they'd just be sitting in the stable for no reason.