As long as you are sensible, you'll be fine. People tend to make out that if you look at a computer component the wrong way it'll break. In actual fact, unless you physically damage it by dropping it.etc it will most likely be fine. Static discharge is an issue but is extremely rare and is made out to be a bigger issue than it actually is. If you handle boards appropriately (i.e. only hold it by the edges and don't touch the individual components/back of the board) you'll be fine and even if you did touch something you shouldn't have, chances of damage are minimal.
The biggest advice I'd give is to not guess things, if you don't know where something fits or how to install something, look it up, don't guess it!
