There are a lot of fonts around that one can use to letter comic books in a manner that looks kinda like the old, hand-lettered ones. Most of these fonts are pretty bad in design and even worse in spacing and leading. Here and there, you'll find some good ones but you'll find a lot of good ones being offered by Comicraft, the folks who practically invented lettering comics on a computer.
At times, their fonts are pricey but New Year's Day — and only for New Year's Day — they price them as per the year. So tomorrow, they're all $20.17 per font. That includes some that usually sell for a lot more and even a few that normally sell for $19. If you have any thought of purchasing any of their fine fonts, this would be the wise time to do that. Their website is where you do this and you can also learn a lot there about how to use them effectively.