Thats a great time for your first TT. I'v only done one 10 this year and equalled my PB at 23:13. It was a little windy though and i hope to get a better time in before the end of the season.
There was a nice little documentary on eurosport the other day about the TTing scene in england called "Cycling: The Race of Truth". Apparently it's repeated a few more times during the TdF, so keep an eye out for it.
There was some input from Alex Dowsett but mainly followed average club riders riding at their local club TTs, so it really showed what happens right at the grass-roots level where anybody watching could go out and do the same thing for themself.
I think a lot of people are put of doing this sort of thing because they are worried about coming last and being laughed at but i think the film captured the atmosphere quite well showing that it's more of a race against yourself than anybody else and the other riders are more supportive than competitive. I expect there will be a large rise in the number of riders at these events after seeing it.