And you will find that here. That doesn't include much in the way of detail though (especially regarding the TKL customisations).
However there is a link there to the GitHub appliance page (which again doesn't include much detail). But there are 2 links there which DO provide a fair bit more detail... Specifically Site-to-Site (office to Amazon VPC) and Gateway (secure internet access). So hopefully they might help get you going (and at least gives some detail about the relevant TKL scripts)...
The next place to look is probably the Debian Wiki (as TKL v13 is built on Debian Wheezy), although this will only include info relevant to OpenVPN (and will not provide any extra detail on TKL stuff). If you still want more then you like you suggest the OpenVPN docs will probably be the best bet (keep in mind that the Wheezy version is 2.2.1).
[update] FWIW I have summarised this info within the TKL Docs
First place to look is the appliance page
And you will find that here. That doesn't include much in the way of detail though (especially regarding the TKL customisations).
However there is a link there to the GitHub appliance page (which again doesn't include much detail). But there are 2 links there which DO provide a fair bit more detail... Specifically Site-to-Site (office to Amazon VPC) and Gateway (secure internet access). So hopefully they might help get you going (and at least gives some detail about the relevant TKL scripts)...
The next place to look is probably the Debian Wiki (as TKL v13 is built on Debian Wheezy), although this will only include info relevant to OpenVPN (and will not provide any extra detail on TKL stuff). If you still want more then you like you suggest the OpenVPN docs will probably be the best bet (keep in mind that the Wheezy version is 2.2.1).
[update] FWIW I have summarised this info within the TKL Docs