I'd suggest breaking down the setup into sections.
1-Setup dual VLAN and zones for your two computer segments as desired
2-Adjust the security policies as desired between the two zones
3-Add on the remote access setup
For the first two I have a sample configuration for SRX and EX in the free Day One: Ambassadors Cookbook 2014, Managed Switching for a Small office on page 13. This gives you the basics of getting the switch and SRX setup and the VLANs and zone policy samples.
http://forums.juniper.net/t5/Day-One-Books/Day-One-Juniper-Ambassadors-Cookbook-for-2014/ba-p/258419
Once this is working you can add a remote access VPN. To provide this link we need to know the version of Junos you are running. There are some significant changes to remote access VPN across versions. But you will need to get your base network up and running first anyway.