The starting point

The easiest starting point for new researchers is the 1901 census.

Choose someone  in your family who was alive in 1901 for whom you have confirmed details such as date and place of birth, address etc.

Find them in the 1901 census to give you a confirmed starting point.

Find out who was living with them in 1901.

That provides more direct confirmed information.

Trace those people in Birth, Marriage or Death (BMD) records for additional conformation.

Then  move backwards in the census following that person and immediate relatives who they were living with until you reach their parents.

Confirm those details in BMD records and move backwards again until you reach the 1841 census.

That should give you a family tree to act as the basis for other work to identify more information about those people or to find other close relatives.