Newbie Tanaka- Would You?

Thank you in advance for putting up with a newbie. I asked around and for $100 got a 1981, 8'4" Tanaka floater. I don't know anything about surfing (I just learned what a "floater" is) aside from what I have been reading online. I am a friend of the surf having grown up body surfing, boogy boarding, and most recently, kayaking the surf in a whitewater spud boat. My board has some dings and a nice crack in the nose which I can fix (i think). What about the rest of the board? There are several thin cracks and circular depressions. They don't look too bad but I'm reading that they may be worse than I think. I just want something I can use to learn how to surf. Any thoughts?