Hi Andrew, welcome.
When I started out - the only names in my family tree were my parents, one aunt and one uncle and my siblings. I had a first name for my paternal grandmother.
I joined two research sites, first thing I did I purchased my parents marriage certificate to establish their fathers names and occupations. At the time I didn't realise that the witnesses to the marriage were important.
From that I then established the first name and occupation of my grandfathers. I researched the census records found their names and an approximate year of birth.
As and when I could afford more certificates I bought them up, these covered birth, marriage and death.
Generally thereafter was quite successful in tracing quite far back.