How to "choose" co-founder

I dare used not "find" but "choose".

Contents of business plan document

When I decided to startup, I was thinking what kind of industry and what kind of service I should provide.

Industry ... of course web.
Service ... 2C (because all of my experiences was services 2B and I wanted to try 2C)

Then I decided to start new web service to consumer.
But I knew that we need much money to expand web services 2C because we must gather lots of users such as to publish ads or something.

First business plan

Just after I retired, I was thinking what business I would start.
I thought of lots of services of IT industry and I introduce the first idea in this blog. As a result I gave up choosing it due to some reasons but I home this can be good reference for you.

List that I wanted to complete till I retired

Since I decided to retire the previous company, I listed up several things that I wanted to complete till I would retire. Because I thought I should decide what I would do just after I retired till I could get salary.

As a precondition, I had not experienced to startup and didn't have enough experience and knowledge related to startup. So basically I thought I would get information and knowledge about it.

Here are the list that I did (or wanted to do).