Originally Posted by
noglider
Well, that is also a broad question (which is easy, which is hard). I'm tempted to say if you have to ask, then it's all too hard. But that would be unkind and possibly inaccurate. Tell us what mechanical things you have done successfully. Tell us what mechanical things give you trouble. Building a bike from frame and components is very easy for some and impossible for others.
No, not unkind at all. I'm embarrassed to say that I only learned to change a flat last week, and have never done it myself. I'm going to have to opt out of the actually building, but am seriously considering having a bike shop build something.