It is almost that simple. Firstly for your signature that you could now type into an email and it would be your signature, not a scanned in bitmap. Now a days, all most of us do is type at our computers, and we find ourselves missing our written words that we used to show our personal touch, but we confess that it is much easier to type then write. Type the letter in Times Roman and then select all, and change it to a letter in your handwriting. Or just do it with your signature.
Most font programs are quite expensive, and have a great learning curve.
It can make fonts from a scan in a surprising short amount of time. You can modify existing fonts with relative ease. Provided are either the boxing effect above or a knife effect, which separates the letters for placement. You can then drag it to the actual letter. The fonts below are automatically blocked and ready to be placed in the character sets.