Here is a great, quick and very basic how-to guide to combining typefaces.
Check out the full H&FJ's guide here.
1. A palate with wit uses complementary moods:
2. A palate with energy mixes typefaces from the same historical context whose families maintain different features.
3. A palate with poise mixes similar line qualities with different textures.
4. A palate with dignity mixes similar proportions while giving each face a different note.
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