LLC or personal? Where should I start?

[Gary Swift]

I am brand new to Real Estate Investing. I honestly believe i've found what i've been looking for my whole life. I due to close this week on my first 3bdrm sf investment property and is working thru my 2nd 3bdrm investment. My goal is to have about 5 rental by end-of-year with the possibilities of getting a minimun of another five next year. My biggest concern is starting right. My focus is primarily income and growth and I plan on doing this for the foreseeable future. Should I form a LLC and start everything related thru it or should I aquire a few properties first keeping it "ordinary"? What is the best way to start from 1? (Well zero--aint close yet)