You could do yourself a huge favour by just browsing the forums and typing in specific questions you have or keywords into the search function. At 14, you are the minimum age for logging hours, and as you know, 16 is min. for first solo, and 17 for PPL licence issue.
There are 2 ways to gain the necessary licences to fly the big tin cans for a living, integrated and modular. If you wack those into a google search you should get lots of info,
Let me google that for you
Best of luck.