First off Xenre, I gotta say Welcome to the CG, the best place for mapping info and tutorials.

Secondly, one of the reasons that you might not have recieved any response to your last question could be that some of our more knowledgable CC users have already responded to this thread. This is the intro forum and as such ppl do not always look at threads that they already posted in.

We have a forum specifically for posting works on progress (WIPs) and asking how to go about things. If you post an example of what you are working on and let us know where you are having problems, you will get all the answers you need (and more ) as well as suggestions on how you might be able to improve your map. This is indeed the best and fastest way to get from "can`t draw a straight line with the aid of a ruler" to "OMG, I never thought I would be getting paid to do this?". Not that rulers are used too often when drawing a map (that are not buildings that is) but you get the picture

Have fun looking around, join in on the discussions, post, post, and post your work (early and often) and do not be afraid to ask questions.