Learn to shift based off the sound of the engine, don’t stare at the tachometer.
Unless you’re like my grandpa who had his engine replaced at 20k miles because he revved the engine until he could hear it running before putting it into gear. Between quieter modern engines, and his hearing not being as good as it once was, that meant he redlined it in the driveway every time he started the engine.
He only got a couple more years out of the new engine, but that was because he couldn’t turn his head very well either so he didn’t bother looking before changing lanes.
Unless you’re like my grandpa who had his engine replaced at 20k miles because he revved the engine until he could hear it running before putting it into gear. Between quieter modern engines, and his hearing not being as good as it once was, that meant he redlined it in the driveway every time he started the engine.
He only got a couple more years out of the new engine, but that was because he couldn’t turn his head very well either so he didn’t bother looking before changing lanes.
The advice is more meant for changing through gears, not starting from a stop. As mentioned, you don’t really need much gas to get going.