allan777, you've come to the right place. Here you'll find everything you need from this media. Your best bet is a one-on-one environment, but until that happens, you're in good hands here.
Here's what this web site and its coaches have to offer you:
Anytime you want to research a specific topic, look at the main page of this web site and you'll see a information strip at the top of the page, saying..... etc.
"click" on the topic and you'll be directed to a ton of informative subjects at your finger tips.
Posting video here is easy and a good way to receive critiques and point by point advice on your approach, form and complete pitching cycle.
There are topics that run down the main page of this web site that are a must for anyone wanting to improve in this position, and baseball in general.
A quick observation - you're 6'1", 157lb frame is well proportioned - height to weight, for you age. However, there are nutritional and conditioning factors that must be taken into consideration to prepare you for the demands of post high school competition, regardless where you live. So, if you don't mind, start by posting a picture of yourself and a short history of your baseball experience. The picture need only be a front/side/back, along with some dimensions like - arm length, shoulder width, chest measurement and belly measurement. We'll work on your pitching video(s) later
You're going to be PM'd and contacted by a lot of other web sites that'll offer help - that's good. Sooner or later though, you'll be hit with a sales pitch $$$$ for books, videos, advice, and so on. Use your best judgment and that of your family. On this site, we ask nothing but to help you.
By the way, in regards to family - they're your best supporters. Depend on them to help you reach your goals. This can be a lonely road that you're about to take, so it helps a lot to have everyone you can get with you.
We all look forward to working with you.
Coach John Baker