Ellie: There are so many great places to buy fonts! For free fonts I like to search http://dafont.com, and there are beautiful fonts for sale at http://veer.com, http://www.houseind.com, http://www.fontshop.com, http://new.myfonts.com, and http://www.typography.com/fonts for starters. You should tell clients they need to buy the font themselves if they plan to edit your design template or carry your design motifs through to other pieces. I don't know that you can buy resale licenses... I've never heard of that. Of course, once you own a font you can use it as you please in your own work, you just can't share the font files with others.