Building Construction of a building? how to start... (correction please)

I'm going to start by talking about foundations. Maybe the first topic we should start talking about when you are decided to build a house. Well, Some of you could say that's not the first thing, maybe and that we should know before spectatives of the building, program, like how many rooms, floors, etc, but I'm going to talk about construction, not design/ floor plans.

Ok, so, i In general there are two posibilities of foundations we could have, superficial foundations (footings) and deep foundations (containing walls and piles). There are different kind of footings as well as different kind of containing walls and piles, but this topic will be another entrance session, lesson, discussion or lecture (choose one) for a more in depth detail to my notebook.
Depending on characteristics of the soil and loads weight of building we should choose the type of foundations (well, maybe architects or engineer do) mixture to use.
Most of foundations are made of concrete, it is a mix of sand, gravel, cement and water, and maybe other admixtures to modify some of its characteristics for different types of buildings or houses (maybe say structures). 

Next thing should be the working proccess of any of this kind of job.

Any questions?

Few correction or additions I saw to improve this. Overall pretty well written.