Erskine May is a work which covers the parliamentary procedure and constitutional conventions affecting the UK Parliament. It provides descriptions of how procedure in the House of Commons and House of Lords has evolved and the conventions that apply.
Using the legal databases, search for a word and then if there’s a relevant piece of legislation it will be cross-linked:
You can find the full text of all Acts from 1267 to present, enacted and revised, on the following resources:
Other useful places to look are:
Sessional papers including page images and searchable full text for each paper, along with detailed indexing. Collections for the 18th, 19th & 20th Centuries and Hansard 1803-2005 are available.