Please help me !!! I need advices.

[Nonox]

Hello,

I wish to begin in the world of crypto-currencies but I would have 2 questions :

1) Which site of exchange is, according to you, the best by taking into account of :

- the reliability of the site
- expenses in case of purchase/sale and deposit/retreats
- a large number of currencies proposed (indeed, I would like to buy some Shitcoins such as Greencoin). With regard to Shitcoins, to exchange of the crypto-currency on 2 or 3 sites do not disturb me.

2) Then, which site you advise me to buy Bitcoins because if I do not make a mistake, certain sites of exchanges accept only this method of deposit.
Do I have to create an online wallet by means of a software which will allow me to pay some money above ? In this case, which one you do advise me ? And how put it some money above ? Are there expenses of deposit/retreat ?

Could you advise me because these questions block me.

Thanks a lot,