I recently got into 3d printing. I use this stream to monitor my prints when I am away. So far, I’ve learned a ton, mostly from failures. PETG has been the easiest to print with so far, but it has a brittleness that doesn’t work all of the time. I’ve had the most problems with ABS printing (not sticking to the bed, shrinkage during cooling that pulls the print off the bed or warps it, low layers gooping from too high of bed heat, support material ruining the finish, etc). Polycarbonate has also been an absolute failure. I’ve had success with PLA however have found that the finished pieces can break easily.