How to plan...

I just found what I need to do to help get me out of this depression,I need some advice on how to do this.
How to plan a car build,what do you do step by step,where do you start?

If I can figure this out, it would be a big help. I have about 16 years worth of magazines that I can go through to get idea's that are easy to do and plan for them. I would like to go Pro Touring with my Charger but there are somethings I can't afford or they don't make for it like the k member.I also know I can weld up my k member and make a few mods to it to help in the handling.