I like fonts but I don’t have enough budget to buy the ones I really want. The Source Serif Pro is a serif font that ideal for reading and long form writing.
The basic idea of serif fonts is that the curls, points and shaping makes them easier to read that sans-serif fonts (like you see here).
This opensource and free font is produced by an Adobe staffer. Its genuinely both beautiful and readable. Here is a screenshot from my latest Scrivener project: