Weight transfer is a basic thing to understand. For novicies like you and I, it's definitely good to brake in a straight line, and smoothly let off the brake before turning in. Though sometimes it's good to have a bit more weight on the front of the car, especially with the base package to get the front to tuck in more, but you can experiment with that later. Stick to the basics for now.
I don't think it's a good practice to coast around turns. Generally I like to at least get back on the throttle a bit and accelerate through the apex and out of the turn. And when you become more advanced, you can also use the throttle to adjust the attitude of the car. You can transfer more weight to the back of the car by applying throttle, but you can cause both understeer and oversteer this way. Lifting can alleviate your understeer, and can also cause a spin. Just depends on the context of your inputs.
I think the thing to do is take an incremental approach. Focus on smoothness, the line, and not over reacting. When drivers are as young as we are, every year of experience makes a huge difference.
Hope I didn't say anything incorrect!
'05 Lotus Elise: RS134 Monolites, Nitron Singles, Monoballs, V2 arms, RTD2 brace, Innovative motor mounts, V2 tank, GPan, Larini 8", TransCables, LumosHID, GiroDisc, Ferodo DS2500, etc.
'16 Porsche Cayman GT4