Hi Mysterious Lady:
Nice nick, uber misterious!
Well, I am a girl like you, and I can also follow directions which is a commandbile quality for a girl (at least some guys think that). I have been installing most of the bike parts myself. The ones you mentioned are basic, and the tools required are very basic as well. My rule is, if it has a manual, and it is sold to the general public, then it is installable.
In case I run into trouble, here are some resources in my tool box:
1. youtube.com - if a product video is not there, something similar is.
2. ehow.com - usually provides some good step-by-step directsions
3. manufacturer's sites and tech support
4. calling bicycle shops (LBS) and getting some free advice
5. and, if all else fails, getting my husband to install it for me
.
Alexandra