Post by Nulgar
That minion is your "pet" (a term which can describe
various things in WoW though)
At level 33, you have access to all warlock permanent pets, the
Imp, the
Voidwalker, the
Succubus and the
Felhunter. I suggest to summon each and examine their abilities in the so-called "pet action bar", which should be above your normal action bar in the default interface. If you don't find the summon spells in your spellbook, you should visit your class trainer :)
Riding and Flying are a different matter. Well, actually, as a warlock you have it a little easier, when you reached level 20, you automatically got the first level of Riding (+60% speed) and the
Felsteed, a warlock-only mount. When you reach level 40, you can learn
Journeyman Riding (+100%) from a Riding trainer, though you either have to go to your character's race's capital to find a Riding Trainer willing to talk to you, or do it the easy way and visit either
Bralla Cloudwing in Stormwind or
Maztha in Orgrimmar, next to the respective Flight Masters (where you can get a "taxi" flight) They are labelled as "Flying Trainers" (which you can learn starting with level 60) but they also teach the Riding skills, regardless of character race.
You can also learn the
Dreadsteed from a warlock trainer, or visit the Riding Trainer for your race anyway, as next to them, there is a vendor selling your race's faction mounts, but as a warlock, this is only an option, since you have class mounts. To acquire the mounts from other city factions, you need to reach an exalted reputation with them. It is luckily quite easy to earn reputation with them these days, simply wear the appropriate
championing tabards while doing dungeons.
Post by Nulgar
While these coordinates are provided by the game itself, the default interface does not display them - but addons can do that. A very good one for this is
Mapster.
Quick installation guide if you never touched addons before: on the site I linked, you can download a .zip file. You need to unpack its content to \Interface\Addonsthe part in brackets is of course depending on where you installed WoW, though the default location is
C:\Program Files\World of Warcraft