Go to school. Go to film school first and learn all about filmmaking. Try to take classes in all facets of the process so you can have at least a basic understanding of how everything works. Then get a degree in either business or entertainment law or both. Business will teach you how to develop and run a company. Entertainment law will teach you how to negotiate contracts, make deals and work with the legal aspects of making movies.
Work in the industry. Start as a development intern and see how scripts are covered, move through the ranks and eventually become film deals. Get a job as a PA and run around helping everyone out and pushing props and sets around. Try you hand at making an independent film. Go to film festivals and see what others are producing.
Become a producer. Obtain some proven credits on films that you produced. This will show potential future investors that you know how to run a film and get it made. Work for several years on making yourself known. Network with everyone. You will eventually need every single position for a studio so keep business cards on file of people that you like and trust.
Create a business plan. Have a studio head or other high up executive look at it. See if they can find any holes in it or potential problems. Once you have a solid business plan start seeking out investors. Look for upfront money but also consider trade deals for equipment, locations and so forth. Remember, you will need everything for your studio! Once you have raised all the funds you need purchase your land.
Build your studio. This will probably take months to complete but if you plan it out right you can have phases of construction done so that you can use sections of it before the entire place is done. Begin searching for your scripts to develop or start developing existing scripts. Interview and hire employees and freelance crew members. Make your first film and get ready for Hollywood to see it! Good luck!