The weekend Hints

Saturday:
Puzzle 1 Hint 1: Whats that? It smell wonderful!
Puzzle 1 Hint 2: I know there are a lot of really good smelling man made things but I'm more of a nature guy myself
Puzzle 3 Hint 1: Well you know what to read but maybe try some other methods for what letters you're looking for
Puzzle 4 Hint 1: The cipher here is actually really simple its so simple that I'll just tell you what it is it's a vigenere cipher now go find the key