New Player Advice Needed

Hi Guys

Soory if this seems a stupid question but please bear with me as I havie only been playing afew months and am not completely aware of all the rules.

Yesterday I was playing with a freind, I hit a tee shot which went right into dense tree land, I suggested that I better play a provisional.  This also went right right but not as far right and also considerably longer, we were confident that one of the balls would be found.  But unfortunately neither ball was found, it was agreed that I should take a drop as the tee was occupied by a group of four just arriving. My question is,on which line should the drop be taken (the first or second tee shoot) and how many shots had to counted up to that point.

Thanks in advance of your help

Roy