Implies that A is more (...) than B.
パンダはバナナより重い。 pandas are heavier than bananas.
You can also replace は with (の)方. If it is a noun, it requires an extra の.
夏は冬より好き 冬より、夏の方が好き I like summer more than winter.
Can add a も for emphasis
大変なのは楽なのよりも楽しい Being hard is even more fun than being easy
よりまだ implies a comparison where A is higher than B, but neither are particularly high.
いなり寿司は天ぷらよりまだ安い Inarizushi is even cheaper than tempura.
より少し means A is a little more than B
ロールケーキは{歌舞伎揚|かぶきあ}げより少し高い。 roll cake is a little more expensive than tempura
よりもっと means it is even more, both A and B are already expensive.
スイカはいちごよりもっと高い。 Watermelon is even more expensive than strawberry.
Superlative
When used with a Question word, can be used to express that it is the most (...)
商品の品質を何より大切にしています。 We place value in the product's quality over everything else.
この仕事は誰よりも早くできます。 (He) can do this job faster than anyone else.