@canthavetoomanylights Have one sheet of paper for each person.
Start with yourself and work backwards. So to start with, on your tree and with a sheet each, you could have (for instance) yourself, your siblings, both parents, all four grandparents. That's enough to start with. You can then fill in the blanks with aunts & uncles, their spouses and their children (your cousins). You could easily have quite a few sheets of paper in your folder in a couple of hours. Step families makes it more interesting, especially when you start to get half-siblings.
By the way, when writing down female ancestors, you need to have their record under their maiden (birth) surname. So your mum's page would have her full name on it as registered at birth. Her birth date and place of birth, the names of both parents. Then you can write down any people your mother married (plus date of marriage and where) or had children with, including yourself, on her sheet. Practice getting information on people you know, and where you actually have proof of the details.
Use the FreeBMD website to find birth, marriage and death certificates, and send away for them. Order from the official GRO (General Register Office) and nowhere else. Those certificates will have additional information on them, such as informant of death (usually a close relative), witnesses to a marriage and the names of both fathers.
You need to be very careful and use only official records such as birth, marriage and death records, the censuses and church parish registers. Also wills, military records etc.
Just because it is on the internet, it doesn't mean it's true. Never assume that someone else's research is correct. Many MANY people on Ancestry (and other sites) find someone they think is right, add them to their tree, link to other trees, pick up hints from other people's research.... they take short cuts and assume that other people's research is correct. The error is carried forward into their own tree.Do not fall into that trap!!! Do your own confirmation of every single fact before assuming that anything on anybody else's tree can be included in yours.
Finally - some family members may have skeletons in their closets and may not necessarily tell you the truth.