The document provides a guide on connecting and logging into servers via SSH or VSCode's remote-SSH plugin, emphasizing the switch to key-based authentication by August 11, 2024. It covers creating SSH key pairs, configuring the local ~/.ssh/config file for easy server access, and setting up environments using tools like uv, conda, or docker. The document also addresses issues such as limited home space, checking GPU statuses, using specific GPUs with PyTorch, network problems, running code in the background with tmux, data storage recommendations, NAS usage, advanced configurations for zsh, GUI-related solutions, copying files with progress indication, receiving email notifications after training processes, and alternative methods to access the campus network when the school’s VPN is unstable. Additionally, it introduces Zerotier as an alternative method for off-campus access to the university's internal network.