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.
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.
That depends on if the starter deck is sealed or not. If it is open, the cards and their condition.
The best place to make a deck online would be cockatrice.de because after you make a deck you can test for free.
A giant deck is a deck consisting of the creature type giant.
You can do a search at allmagiccards.com and essentialmagic.com
60-75 cards,
the best starter deck are squirtle sindoquil and turtwig
a deck that you can pilot well and be able to respond to threats or know your "outs" in sticky situations.
Are we talking type 2 or just from the alara block or including all sets?
You just need a good deck with flying and cards that give you life
Email me at ocwilles@gmail.com if you can help me!