I have done strength training without a coach for 6 years. My squat went up to 185kg/407lb without any injuries. You can do it, and depending on the coach, you may be better doing it alone. However, with a good coach (not easy to find) you will progress much faster. I recently started competing and found a good coach, I wish I had found him earlier.
dawidw|7 years ago
In what way coach is helping? Providing that your technique is correct, application leads you - so what's the coach's role?