Hansard (the Official Report) is a "substantially verbatim" report of proceedings in both the House of Commons and the House of Lords.
There are Select Committees in both Houses of Parliament. Their task is to scrutinise the workings of government and to publish a report of their findings.
A Bill is a proposal for new law or a proposal to change existing law. It must be approved by the House of Commons and the House of Lords, then receive Royal Assent (agreement from the reigning monarch) before it can become an Act. You can find out more about the passage of a Bill on the UK Parliament website.
A Command Paper is a government publication presented to Parliament "by Command of Her Majesty". They include Green Papers (government consultation documents) and White Papers (government policy documents). A Command Paper is usually identified by a sequence of letters and numbers, e.g. Cm 8865. You can find out more about Command Papers on the UK Parliament website.