Noob Info Resources
I don't have much experience with DSLR video but I have found these links useful:
This a good follow focus alternative for 4$:
This guy does a lot of DIY video stuff:
You will soon find out that many companies charge A LOT for video accessories...
Personally, I am not that in to video to spend thousands of $. Another problem that I have is that it is a lot of equipment to carry around with many small parts.
So, I am using my tripod for both shoulder rig and steady cam.