BlackHole maybe along later to point you to some more documentation but in the mean time...
I hope that's not a bad thing!
OldSchool - have you got an HDR-FOX T2 or a HD-FOX T2? Everything is VERY EASY for an HDR-FOX T2, you don't have to worry about a thing... and what makes it easy is the use of the web interface. You cannot control the custom facilities through the normal remote control, we have no means to do it, but the user interface through the web interface is highly developed. Installation is a two-stage process, first you add the "hooks" that are needed through an unofficial firmware update, and then you access it through a web browser on your home network to download and install the full software, and choose what facilities you wish to use as "packages".
The HD-FOX is a little more of an issue. What you can do with it is limited, and as it has no storage it is necessary to add some, but as there is little point using the custom software unless you intend to record, you will already have fitted a USB hard drive and used the Humax to format it. Once that is done you can carry on and install as per for the HDR-FOX - the Humax-formatted hard drive is what you need (Ext3). Warnings about needing to format a USB stick as Ext2 refer to the case where a very few people (ie me) need a few custom facilities but do not need a hard drive.
The problem with documentation is that this project has developed very rapidly over a period of 6 months, and what was written early on has been superseded with new easier interfaces etc etc. I have done a lot of support with technical writing, but my efforts have been concentrated in the forum and not the wiki, and I don't suppose I'm going to catch up now. I'm also not very familiar with what
is in the wiki. But that is the nature of a community project like this: the clever bods make the progress in the coding, and the rest of us observe, marvel, and follow in their wake. The documentation (what there is of it) will always be behind, and the cutting edge information is disseminated through conversation. Keep reading the forum posts as they come along, not necessarily replying to anything, and soon you will know as much as the rest of us.
And now I will mention what the sarcastic comments were about: to get a background understanding (and I know it's tedious to do homework), I do recommend reading the Glossary and the Trail Guide, and to look for existing information through the Index - all of which can be found through
NEW READERS START HERE (click).