I think one of best bits of advise is start simple, with a view to expanding/upgrading your equipment. If you have a basic setup (HLT + Mash Tun+ Kettle) and do a few brews on that, you'll start to get ideas about improving the design/setup.
Jumping in the deep end and going to the effort of fabbing a system like BB's (which is awesome) could soon lead to tears as you start to realise, Damn i should have done this, didn't think of that etc.
Remember the Brew Boy has grown out of a lot of experience and a few prototypes. Just grabbing plans off the internet may not be the best idea, as there are a few differnet setups, 2 tier, 3 tier, single tier, RIMS, HERMS and so-on.
So start simple, get brewing and let the creative juices flow from there. Good luck
:icon_cheers: SJ