Hi and welcome to the extremely addictive world of digi-scrapping!

As far as 72 being the biggest size, you can manually type in a bigger size. Just go into the box and highlight and increase as needed. In order to use the TTF files, you need to install them. Different people have different methods. It's not good to have too many installed fonts at once so a lot of us will just install as needed. (I, unfortunately made the mistake of installing ALL of my downloaded fonts so I have over 1200 fonts on my comp righ now.) It's better to use a font utility (like the FontThing). There are lots of posts on that. Just go through the font forum and it's full of very helpful info.
