As someone that was new not so long ago, here's a bit of advice. Have fun, as you did, putting in a bunch of people. But do be a little careful, I had to remove a whole bunch way back then also.
BUT.. now that you have some people in your tree, think about them. Look at the census they are in. See who lived in their family. See where they lived. See if you can find any information on this person's birth, or that person's death. I keep meaning to do this systematically from the home person but finding other interesting areas to study, but then I try to do a thorough job there.
You will make mistakes, if someone comments on a person in your tree with a correction, receive it as welcome and check into it. But try not to make the kind of mistakes where the child was born before the parent.
Don't get aggravated by the shaky leaves.. ignore them until you really want to work on that person. I forget how many hints I have stacked up.. it's a lot.