How to point my yahoo domain to leasweb host?

[admin]

Dear users,
I have a purchased a domain name from yahoo and a hosting package from leaseweb. Now I would like to point my domain to my index.html file stored at leasweb host

I got the following info from leasweb when I signed up.

Here are the login details for domain: mydomain.com (Linux Silver)

FTP:
Server: 84.12.170.1
username: username
password: password

Plesk control panel:
<!-- m --><a class="postlink" href="https://85.12.143.5:8503">https://85.12.143.5:8503</a><!-- m -->
username: username
password: password


Mailservers:
POP3/SMTP: mail.mydomain.com / 25.13.554.1


I am very new to making web sites. So please help me to set this up. Also when I connect to my ftp I see the following folders.


anon_ftp
bin
cgi-bin
conf
error_docs
httpdocs
httpsdocs
pd
private
statistics
subdomains
web_users

for which folder should I upload my html and php files?
Thank you for your help and advice.