Proper Way to shift to 1st gear?

I've noticed for beginners it's easier to rev the engine a little bit higher before contacting the clutch pad. That's probably ok while you're practicing, but it's not ok to continue after you've mastered the motion. 3000 rpms is a little high though. Maybe 2000 or 2500 for a beginner. You shouldn't need much higher than that to prevent a stall.

Guillermo doesn't mean that speed is completely irrelevent, he meant that you shouldn't be looking at your speed to decide when to fully release the clutch. Instead, as he said, use your tach not your speedometer. And every situation is a little different, so you can't always use by-the-book numbers to decide these things. The most important thing is to make sure you don't partially hold the clutch down for too long, or it will wear away your clutch pad very quickly. On the flip side, you don't want to release it too quickly or (as you apparently noticed) you'll stall or buck the engine horribly.