Start off slowly and simply. Start by trying to learn your materials. Start by smelling them over time, and follow how they develop and change over time. Does the material disappear in a matter of minutes or is it still to be smelled the next day, or even the next week? Does the material's odour change over time, or does it stay the same? How does it change? Does it just get weaker, or does the odour change. I don't know if you have any smelling strips, but if not get some. Always label them so you know what you are smelling. Try to describe what you smell. No matter how daft it sounds if that is what it smells like to you, then it is right for you. Many people first starting perfumery want to create a fragrance without knowing their raw materials. It won't work and you will find it to be very frustrating. Without a thorough understanding of each raw material you will never get the best out of your kit. Note the strength of each material. Does it remind you of anything? Can you imagine that smell going with anything else you may have. Note whether the material is top, middle or base note (basically how long it lasts on the smelling strip). You should be able to recognise each material when you smell it blind (when someone hands you a smelling strip you should be able to guess what the material is).
Once you have done that, start mixing a couple of things together, in a variety of ratios. See how one material affects another. Try to get a blend where neither material is dominant. See if, by mixing two smells you can achieve something greater than the two.
It is a slow process, but if done right it will stand you in good stead for a lifetime.
And above all else, enjoy the wonderful, fabulous world of smells. Our sense of smell is too little used, and is a source of great pleasure.