A shortish, coarse toothed handsaw will cut anything you need to cut, even plywood. Up here, a Stanley Fatmax is like $15, and there are cheaper versions that will work about as well. So, that takes care of the needing dad to help cut things problem
As far as getting a little ways and then getting stuck, post here!
Especially if you have a way of posting photos of your problem, but even if you don't. We can surely figure you a way out of your problems.
As for "you're doing it wrong"... let me tell you, my ENTIRE childhood, I'd be happily building things out of boxes and newspaper and straws and so forth, and my father would walk along and look at it and say "you can't do that, it's an inherently unstable configuration". That was practically his favorite phrase, "inherently unstable configuration". At first I took him seriously and got all upset and took things apart and gave up. Then I realized... a lot of the time, what I'd built clearly WAS stable, because it did not fall apart, you know?
And when it did, that was how I learned what did/didn't work.
So, not that I am generally in the business of suggesting kids ignore their parents (and heaven forbid my own kids should hear this
) but maybe, in this select type of instance, you would be better off just nodding and saying 'ok, thanks dad' and then ignoring him
You really CAN do it. Honest. Hang in there
Good luck,
Pat