There is no best they are all equal.
I recommend the newest Intro/Starter pack you can find though, so it has the most up to date changes and rules.
I presume that you mean tournament packs. If so they are random.
The standard deck size for a Magic: The Gathering deck is 60 cards.
No, you cannot have a colorless commander in a Magic: The Gathering deck.
The minimum deck size for a Magic: The Gathering (MTG) deck is 60 cards.
The standard deck size for Magic: The Gathering is 60 cards.
The minimum deck size for Magic: The Gathering is 60 cards.
There are a variety of starter packs, depending on what you want to do you can choose from any of them. Green is a very popular one and a somewhat strong starter deck.
The best way to start with Magic: The Gathering is to get a beginner's deck and play with friends or at a local game store. You can find a quick start guide on the official Magic: The Gathering website or in the starter decks that are designed for new players. These guides will help you learn the basics of the game and get you started on your journey into the world of Magic: The Gathering.
That depends on if the starter deck is sealed or not. If it is open, the cards and their condition.
A Magic: The Gathering deck typically consists of 60 cards.
The official deck size limit for Magic: The Gathering is 60 cards.
The standard deck size for Magic: The Gathering (MTG) is 60 cards.