There's no better place to start learning needlepoint then by learning how to thread a needle. But fear not! The process is pretty easy to do on your own. If you need help, your needle threader is here for you!
Pre-COVID, I used to damp the end of the thread and lay it flat between my front teeth. I've since changed my ways, and thank goodness for that.
The key to getting your thread through your needle properly, is by making sure you are first using the right needle! Needles used for needlepoint are usually tapestry needles, which have larger eyes (the opening you thread through) and blunt points since you won't really need something strong to pierce through.
In terms of needle size, this is a personal preference, but here is a good rule of thumb: