Building a new home

Dear Sir,
I'm looking at building a new house (two storey) on a leveled block of land. Since I'm building new, I thought I'll use Fung Shui to improve my life and most importantly my family. Mind you I've never use Fung Shui before.
Can you please provide some good Fung Shui tips in the Plan drawing phase in general such as what room should be place in which direction and which direction a particular room shouldn't be facing.
I have a few queries. Firstly, if we have the front entrance (main door) into the house and then have a straight hall way directing to the back of the house which means you can see and walk straight to the back from the main door. Is this consider bad Fung Shui?
Secondly, we like those French glass doors or bifold glass doors so we are thinking to have a lot of these doors at the back of the house so we can open up the house and have open access to the back yard, so basically the back of the house will have many glass door, is this advisable?
Thirdly, there are informations on determining the direction of the main door and not the front of the house, I assume its the same right?
Last but not the least, assuming we use the same method in determining the front of the house, how do we apply the
building shape such as protrution and intrution on a house that are not facing North? (All the samples are for north facing)
I like your web site as it has so much information, keep up the good work and look forward to your reply.
Regards,
Michael Tan