Boxxing is not allowed. If fact, if you want to have multiple accounts logged into, you will need to get an IP exception. This server is very much anti-boxxing and there are measures in place to identify it.
http://wiki.project1999.com/ will answer all your questions. I would suggest checking out guides for individual class guides on where to hunt and there are a few starting out guides which will give a per level suggestions to level solo or in groups.
Also - Welcome!