I am a newbie at driving at the moment. any helpful advice?

I am 20 years old and i just got my permit. (yes folks) i got it so late b/c i was terrified of driving. b/c ive been through life threatning car accidents. but screw that, b/c theres no excuses. anyways ive been practicing driving and I dont know why i freak out when i change lanes and manuever the car to make turns. i suck at making right turns btw. idk. i just want to know. is there anything i should keep in mind when turning? i am not very observant...so i also think i should learn more about traffic laws. is there a specific site for that? how can i boost my driving confidence? & any helpful tips that makes driving easier for you share it with me please. I NEED TO OVERCOME MY FEAR. and sry about typos.... im at work really not suppose to be online but i just had the urge to ask u guys these questions ;)