Breakdown of Ich lerne von Freitag bis Sonntag.
ich
I
lernen
to learn
von
from, of / by (agent in passive clauses)
bis
until / to (as far as)
Questions & Answers about Ich lerne von Freitag bis Sonntag.
Why are there no articles like dem before the days of the week here?
When you use von ... bis (from ... to) with days of the week, months, or years, you usually drop the articles entirely. You don't have to worry about cases for the days here, just use the bare words!
I learned that von always takes the dative case. Does that still apply here?
Yes, von is a dative preposition. However, because we drop the articles for days of the week in a von ... bis phrase, you don't see the usual dative changes. If you did include an article, it would have to be dative, but leaving it out is the standard way to express this.
Doesn't lernen mean to learn? Why is it translated as study here?
In German, lernen is used for the everyday act of studying for a test, practicing, or reviewing material. The German word studieren is a false friend; it specifically means to be enrolled at a university or to major in a subject, not just sitting down with your books for the weekend.