He knew things about me that I didn't know. Extremely insightful, knowledgeable and well abreast of the 'big-picture' as it pertained to budget, value and a well designed home for me and my family. Hi - I agree - if you are a beginner, software for designing homes, no matter how simple, has quite a learning curve. Also remember - designing a home is not a 2D project - it has to be 3D - stairs, Building Code for minimun rise and run, head room etc. Etc., so yes, an architect or a REGISTERD Interior Designer can help you out.
However, if you want to try the software one of the 'easiest' programs I have come across is called Punch - it comes in a couple of different levels - you can find info at Good luck. Not sure waht you mean. There's a big difference between 'design' and doing the technical/permit drawings. Regarding the former, no software will give you the creativity often required to tool the homes design into something that works on multiple levels. That stuff can only come out of your head (just so you know, I'm an architect and go through this process on a daily basis).
And JayWElle above had good advice but I wouldn't necessarly look for the AIA label. Like a country club, if your check clears the back, you're in the club. I'd look for someone who has a solid rep in housing and talk to former clients. If you wan some book suggestions there send me a PM. I usually come up with the main concept using a pencil and paper.
It's then developed using software and even then the software isn't suggesting solutions. It's not being creative for me. For example, if I'm looking at one room and it seems out of proportion in some way, the software doesn't say 'Why don't you increase it's height by 2' '? It's me thinking 'Maybe increase the height' and then manipulating the room so it gets taller. It can help me evaluate solutions but it can't come up with them. That's gotta be me.