I'm confused about relative clauses

It is a bit complicated, but nothing over your head!

The short story is that a relative clause is a phrase used to connect ideas in forming complex sentences.

My father, who is also an amazing gardener in addition to a cook, just discovered a new recipe for fudge.

That statue over there that looks like a bear is actually our town monument.

The most common relative pronouns are that, which, and who. (More if you read the reference material, below).

Commas for non-restrictive clauses that have non-essential elements of a sentence that can also be put into parenthesis at times. Which is commonly used with non-restrictive clauses along with a friendly comma.

    The cakes, which took us over two weeks to eat because there were so many, were made by my mom.

No commas for restrictive clauses that contain essential information needed for the sentence to retain the same meaning. That is commonly used with restrictive clauses with NO comma. Beware! This one differs from Estonian comma usage.

    The cakes that we ate last night were delicious and home-made.

Which resources did you use to find the solution? Were the resources useful?