These are the guidelines for the Bricksville website. These contains details of Lego related sets in general.

Parts

Part numbering can be found under the part of the Lego piece. For example part number “3005” which is the 4 x 4 brick piece that can be traced on the bottom. Lego parts are made from ABS plastic.

Fan Made and Unofficial Sets

Be aware if there is any of these unofficial Lego sets because they are not official.