Skateboarding question...? [please answer!!!!]?

alright. ive been skateboarding for about two weeks now and i love it. i can turn one way really good and ive almost mastered my ollie and im working on a kickflip. the way i stand on the board is with my left foot in front, so i can turn to the right pretty well. but my issue is that i cant turn left....like at all. i feel like im gonna fall backwards and when i try, it will just turn the slightest bit but keep going forward. so how do i turn left? can you give me any good tips or direct me to a website or a video or something? i really need help on this and id appreciate it alot. :)