NightCrawler said:
1) Despite the point blank shot, presice shot and extra invocation what other feats suit a warlock?
As others have said, Ability Focus, Flyby Attack and Maximize/Quicken Spell-Like Ability are good choices. Spell Penetration and Greater Spell Penetration are also helpful, especially if you don't plan on taking Vitriolic Blast. Sudden Still Spell is also very useful if you have Flee the Scene, as it allows you to ignore the somatic component and teleport out of grapples.
Also, don't overlook one of the biggest features of the class - Use Magic Device. It might be worth taking an Item Creation feat or two at level 12+, since warlcoks can make almost any item imaginable if they have the right feat, thanks to their imbue item ability. Scribe Scroll is a great choice for this, as it lets you have access to any spell in the game! Skill Focus (Use Magic Device) isn't a bad choice either if you are lacking in Charisma.
NightCrawler said:
2) What about a race good for warlocks? Raptoran? Human?
In addition to what others have mentioned, Gnomes are a suprisingly good choice, IMO. They're small, giving them extra AC and hit, and the +2 Con gives you more HP and better fortitude saves, which are two of the primary weaknesses of the class. Their spell-like abilities are also handy if used creatively. The main drawbacks to them are their lower carrying capacities (which is largely irrelevant once you get a handy haversack or belt of many pockets) and their slow land speed, which also makes them slower when using fell flight. Boots of Striding and Springing can make up for this, though. Or you can just forsake getting Fell Flight altogether and get a flying carpet instead.
NightCrawler said:
Hellfire Warlock isn't a bad choice. It's a 3 level class that is fairly easy to qualify for and lets you increase your EB damage at the cost of a temporary point of Con damage. Make sure you have a wand of Lesser Restoration or a Cleric with that spell if you intend to take this prestige class. It also has the very nice ability of being able to add empower, enlarge, widen or energy substitution for free to charged magic items a few times per day, making those wands and staves you get/make alot more powerful.
http://www.wizards.com/default.asp?x=dnd/ex/20061207a&page=3
NightCrawler said:
4)Finaly do you have an idea about the apropriate equipment for a warlock?
Weapons are largely irrelevant, though it's not a bad idea to carry around a dagger (for its numerous utility uses) and a crossbow (just in case you need to shoot and don't want people to know you're a warlock). A mithril breastplate is the best choice for armor, since it is treated as light. If you don't get that, get a chain shirt. Also, make sure to stock up on scrolls and wands! Level 1 scrolls only cost 25g and can offer a ton of useful utility. Don't forget that you can use magical items of any class, including divine casters! Always have at least one wand of cure light wounds handy for out of combat recovery.