Users are assigned a standard quota of 10 megabytes of storage. This is not a license to use it all, but it is often convenient to be able to temporarily use more than the small quotas many other systems provide. Regular accounts have access to the entire system via either a menuing system or a variety of UNIX shells. I do not anticipate anything disastrous happening. You are encouraged to use and enjoy this resource while it is available.
Resources are always limited.
Everybody will enjoy the system more as long as nobody hogs resources, whether it happens to be dial-in lines, disk space, or processor power.