You can use the 'apt' package manager to download the desired files. Most probably you will require the developmental packages also for your work.
For creating user you can use the 'adduser' command.
Do a 'man' of the command for which you need help. For the list of commands you can check,
http://www.troubleshooters.com/linux.../dsl/index.htm
Regards,
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Prasanta