Hi, I recently found Tin Hat, and with it being the potentionally fastest OS in existence after you get it up and running I found it extremely interesting. However, how do you do when wanting to update or wanting to add certain apps to also run completely in ram?

As I've understood your only option would be to build a completely new image, is that correct? If so the desirability certainly dissapears quite fast.

I've never used Tin Hat before, but I found this on their website: http://opensource.dyc.edu/tinhat-quickstart-portage

I see that this is your first post here, so I don't know much about your goals/experience. If you are completely new to Linux, I recommend starting with a user-friendly distribution such as Mint or Ubuntu. Either of these can be run from a Live CD or USB thumb drive, if that is your goal.

My goal is completely experimental, just for fun. As for experience goes, I know my way around, I've been playing around with Arch and Debian before. And found Gentoo to be my next step in 'Linuxing'.
So as I was looking around in the documentation I found Tin Hat as it is a fork of Hardened Gentoo.
I ask my question as I read on http://lwn.net/Articles/324278/

"But running in RAM also creates other problems. If you find that you neglected to include essential software in the image, you must either create and burn another image or install the extra software each time you boot into Tin Hat."

One of the goals of this distribution is that it runs entirely from RAM. It is possible to save a running system.

http://opensource.dyc.edu/tinhat-quickstart-save

I agree with snowpine that you might be better off with a typical distribution that installs to a hard drive.

As said, I do this for fun, to learn, I will not use Tin Hat as my main OS, how can one learn when held back?

I don't think I am "holding you back" but rather presenting you with a link to the relevant documentation (see my previous post).

Ofcourse, and to that I am grateful, I am refering to michaelk recommending me to "go back to the kids corner" (this is how I percieved his message)
I can fully understand that as I'm completely new to this forum, it's easy to take for granted that I know absolutely nothing about linux and while I'm by no means an expert, but isn't that how everyone began?[COLOR="Silver"]

I think some experience with Gentoo (specifically Portage) will be helpful in your quest, good luck!

It was not my intentions and I did not understand what you were trying to accomplish.

There's a learning curve with any system, and linux is no exception. What programs do what, how to configure, what to change, etc. People are trying to redirect your obvious zeal in case it is blunted by banging your head off a brick wall.