My first couple of recipes were from Anne Watson's book, and after that I started making up my own with SoapCalc. It is also really helpful to put recipes that you know work, after getting your feet wet so to speak, into soapcalc to see what properties a soap that you like has. And like others said, put everything (even book recipes) into soapcalc before making a recipe to make sure that the amount of lye is correct!
One thing you mentioned in your first post which no one has commented on- the scent and coloring doesn't have anything to do with the oils you use for the soap, it has to do with essential oils/fragrance oils and colors you add to the recipe. Essential oils are more natural (doesn't always mean better, though. Some are dangerous, so do your research), special properties MAY make it through the saponification process, and, in my experience, tend to cause fewer respiratory reactions in sensitive people. Fragrance oils can give you more range (they make those oils smell like just about everything), the scent fades less than with EOs, but they are chemical imitations. Personally, I use EOs because I value breathing, but if you don't have asthma you probably don't have to worry about that.