There are several postprocessing steps for the full-length antibody structure. First, the four chains need to be connected by disulfide bonds. Second, the sequence of the full-length antibody model may not match exactly with the target sequence because of the inconsistency with the template structure or missing residues from the crystal structure. Third, the charge states for titratable residues need to match with experimental conditions. These postprocessing steps are required for running MD simulations to study molecular interactions. This section was conducted on a Linux system because of its powerful text-processing function. A short Linux tutorial was given to students to learn basic commands. There are plenty of resources for learning Linux commands; therefore, we only report antibody modeling tutorials.