Mixing 101 - very basic questions

[Mánibranðr Studios]

My general advise for reverb is KISS. Unless you have a specific use case to ride the reverb effect hard and/or use side-chain compression, just slap it as an effect at the end of the chain, and keep it at around -6dB or less. And if a synth has a wet sound, don't even bother, you can easily oversoak the sound that way.