People certainly do this in the UK - and bear in mind that the standard construction method in the UK is not wood-frame, but walls built with bricks and mortar. Of course there is a tradeoff here - UK houses are not built on a continuous concrete slab foundation, the foundations only extend under the actual walls!
Usually, a group of like-minded people will get together and hire some qualified professionals to "teach them how to fish" rather than "catch fish for them".
You also need advice on how to schedule inspections etc - again, the practise in different countries is very different. For example in the UK there is no restriction on who carries out electrical work, provided it passes the supply company's tests when they connect up the house to the mains and start billing you for electricity.
There is nothing intrinsically difficult about any of the techniques involved in house building - the main requirements are care and patience (you aren't building a toy, but something you are going to live in possibly for decades!) and knowing your own limitations and when to ask for help and advice.