Computer geek questions

[G G]

I have ADSL at home. Recently I had my modem bridged because of a double NAT issue. I also have a DynDns account because I have a dynamic ip and I use that for my security camera access from outside the network. Once my modem was bridged I could then use remote desktop to remote into the network from away. I see that it's not terribly secure though. That got me thinking and reading on the internet. I see that Asus routers have a VPN server so you can set up VPN to tunnel back to your home network on your iphones and laptops. I would like to do this but the problem is they use PPTP for the VPN and it seems by reading about it isn't secure at all. DD-WRT does have support for openvpn but it seems like it's a hassle to get it set up. Shibby Tomato has support for my router (Linksys E3200) and has openvpn support as well.

What do the computer experts think? I don't really know how to accomplish it. I don't neccesarily need full blown VPN that costs money would just like to be able to tunnel back to the house to use my internet when I'm on pulic wifi and from work.

Thanks