Guidelines For Mixing Fonts
Pairing fonts can be a challenge and become very stressful. Selecting two or more fonts that work well is one thing - selecting two or more fonts that work together to achieve your typographic aims may cause you a headache. Here are a few tips that can help to alleviate the headaches. 
Using a serif font? Combing it with a sans-serif font usually does the trick.
Using a sans-serif font? Combining it with a serif font works as well.
Combing two similar fonts is never a good idea.
Contract is essential
Stick to tow fonts, or three if you mush (bust use it sparingly)
Don’t mix moods
Combine fonts of complimentary moods
Keep it simple. Use different weights of fonts in the same font family
Combine fonts of similar time eras
