Listen to the 'cart, man. Mining is a great way to make your first million, your first 10 million, and maybe even your first 100 million. And it’s a great tool to have in your arsenal for whenever things go bad and you need to cash back up to get back in the game. (In other words, keep those mining ships and skills around the hangar. The wallet you save later may be your own.)
And as usual, his tips are detailed and awesome: Stick with Veldspar in high sec. Sure, you could make a few more bucks an hour mining rare stuff, but unless a) you know where to find it, b) you’ve already made a deal with the locals, and c) you’re really, really lucky you’ll just end up dicking around a bunch to get things right before you mine, which drops that isk/hr right back down.
If you’re looking for a quickie route to barges, try fitting a cruiser with miners. With the right mods you can fire five of 'em. And ditch the jet can route for bringing a friend (or another character of your own) with a hauler. Shuffle the ore through a can. You leave nothing in the can, and just ignore can flippers. Or hell, give 'em some ore. Doesn’t matter to you.
Last piece of advice: Just ignore any aggressive acts while mining in high-sec. There’s virtually squat they can actually do to you as long as you don’t dish any aggro. And if they want to gank your mining cruiser, let 'em.
Ok, I lied. One other last piece of advice: Don’t buy a gorram Hulk unless you’re really planning on mining rare stuff in low sec. A Covetor does all the same crap without the please-gank-me-I-have-more-ISK-than-brains bling.