Welcome Pierre (and Son!).

the best thing you can do is start a build diary and take plenty of pictures. If there is something that doesn't make sense, or it seems wrong, post photos and ask questions. There are many here that will help and have experienced the same problems before to assist you.

There is also the how to manual on the Pitbull website which has the collected experience of many of the long term builders in it. Its a very good place to start.

Enjoy!