Construction Company?

Does anyone know the "gotchas" of setting up a construction company in Malaysia?

I'm learning enough about construction to actually add it to my list of serious hobbies. Right up there with machine intelligence. Next: figuring out the chemical difference between acrylic, polypropylene, and polycarbonate sheeting...

Building skinny concrete, steel, and glass houses:

I almost know enough about construction to build one of these by hand... LOL. Probably'd just need to read up on civil engineering math for structural considerations, depth of foundations, etc. Main process: concrete and rebars... then learning to weld would be fun. Ok, now I just need to find a job that let's me afford that sort of hobby...