2 WANs with 3 LANs

[GSianos]

hi Guys and sorry for my English.
I'm sorry if this question is already in forum but i don't find it.

i have WAN1 and WAN2 (two different Internet)
and i have 3 LAN (for three different Companies)
i have i Virtual Dedicated and i want with one firewall to control all WANs and all LANs. in the future maybe i add more WANs and more LANs but know i want this:

1. WAN1->LAN1
2. WAN2-> LAN2 and LAN3
   i am newbie and i want our help but i want to tell me very simply to understand.

Now all the LANs see as INTERNET GW the WAN1 and i have pfSense 2.3 (lasta)

thanks a lot.