I don't know which teacher you are, but you must not watch videos to learn. You can watch the video, but you can't follow it as a tutorial. When you go to a nearby park, you should practice Tai Chi every day. Ask more people, some of them learn by themselves, and some should have teachers. Ask more questions, look up information online, and then choose a teacher who suits you. Don't blindly follow the master. I recommend you to read some Tai Ji Chuan knowledge on the website of "Chen Xin Tai Ji Chuan Training Institute (Chen Peiju Tai Ji Chuan Pavilion)", mainly Chen Tai Ji Chuan and Chen Peiju practicing some articles written by Tai Ji Chuan, which should help you learn boxing and find a teacher. Come on!