Okay, so the internet will tell you that Perception and Charisma are dump stats and Intelligence and Endurance are the most important SPECIAL stats to have.
Yeah, a pox on that. Well, with respect to Intelligence, at least.
So here's the deal. Whenever you level up, you get a certain number of skill points, determined by how many Intelligence points you have. The formula is 10 + (INT/2). Now, you might notice that this doesn't necessarily yield a whole number; the extra half-point is held over and awarded on your even level-ups. So if you have, say, 7 INT, when you hit level 2, you'll get 14 points, but when you hit level 3, you'll only get 13.
Okay, so at level 4, there's a perk called Educated. The entire internet swears by this, and they're right to do so. It awards you an extra 2 skill points per level. That's like having 4 extra INT!
So if you have 2 INT and Educated, you get 12+2/2, or 13 points per level. If you have 10 INT and don't have Educated, you get 10+10/2, or 15 points per level. It's a measly two points per level, and frankly, some of those skills you don't need to push past 50 - or even lower.