I find PhysicsForums filled with very interesting and educational topics. I am glad to find a forum like this. PF has helped me understand many physics problems that I could not have solved by myself. Before, I had so many problems in understanding certain concepts of physics. But thanks to PF, Physics is my easiest and my favorite subject. I am interested in this forum because I am looking for STEM materials that might help me understand more about bridges. I also don't know how to do certain things in this forum. If you don't mind, can you please give me some links that can help me what I am looking for? Thank you for your help.