I don't know about guides, were you wanting to learn about how crafting works? Or were you looking for a levelling guide, what to make to make your levels go faster? If you want the most experience then don't use Quick Synthesis, go to normal Synthesis on your crafting log ("N" on the keyboard to bring it up); you gain more experience when you work towards increasing the quality and also when you make something you have not made before. It takes a lot of gil too, you could sit for hours and craft all day long if you had a massive amount of gil :P.