believe it or not my first DotA hero was Invoker, and I laughed myself to death with all the fun I had with him. My first advanced item. damn I can't remember.
I remember it well... It was 2007 or 2008 and my first hero was anti-mage... cause my friend was already a pretty decent player and said that i should pick someone with blink so I could run away easy. Naturally I died alot... and yeah, I went mid. First combined item was power treads I think and the next thing I learned is that it doesn't stack