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Using the "\cite{test_article}" with the following tex and bib file, throws up a compilation error.

This is BibTeX, Version 0.99d (TeX Live 2016)
The top-level auxiliary file: document.aux
I found no \citation commands---while reading file document.aux
I found no \bibdata command---while reading ...

How would I write a biblex reference for a passage in a relevant law? where there is really no author.?

For example UK law - Community Care (Residential Accommodation) Act 1998?

\documentclass[a4paper,doc,12pt,natbib]{apa6}
\usepackage{apacite}
\usepackage{blindtext}
\usepackage{times}
\usepackage{fancyhdr}
\usepackage[english]{babel}
\usepackage{DejaVuSerif}
\usepackage[T1]{fontenc}
\usepackage{url}
\usepackage{csquotes}
\usepackage[utf8x]{inputenc}
\usepackage ...

Using \bibliography{sources} the compiled PDF show "3 References" in the heading.

How do I get rid of the 3.?

How do create section numbering using a, b, c etc instead of numbers?

\section{Chapter} -- Appears a 1.

\subsection{My sub chapter} --Appears as 1.a 1.b etc

How do I insert the date and a timestamp in the bottom left footer of my document, and the page number on the right.?

I have the following where I am using pdfpages.

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{fancyhdr}
\usepackage{pdfpages}

\pagestyle{fancy}
\fancyhf ...

How do I find the numbers of characters within a document.?
Not a word-count, but a character count.