I really appreciate all of you offering tips. It really helps. One person suggested practicing taking off without touching the gas, I've got the hang of that already both in forward and reverse.
For those who keep suggesting that I fix the tachometer, unfortunately, the truck isn't mine and my Dad does not want to fix it.
I tried to practice hill starts on the driveway, it's slightly inclined. No luck. I did end up moving forward but only after a massive burnout. I thought I ruined the clutch because I kept feeling this whirring so I slowly let off the gas then the truck moved. I looked back and saw a cloud of white smoke and thought, "yep, the clutch is smoked" then as the truck kept moving forward, the long peg-legged mark showed up.
Still got to work on the damn hill starts and smoothly shifting.