Pre Sales questions

Dear support team,

1. I would like to make my third highend page. For the me new page I would need a download area to download pdf. What’s the best way to do it?

2. I would need a shop. What kind of payments are possible with woocommerce and which are the easiest ones (I assume that paypal is not so easy)

3. How can I get a Login/Logout and Register Botton into Header? How does it work to get a password etc.

Thanks for your help