I am looking for some advice as I am relatively new to the road cycling game. (So please excuse me if I sound ignorant!)
I have a raleigh R300 racing bike with a double chainset, and have found that cycling in the relatively hilly area that I live, I cannot get into an low enough gear to get me up the steeper climbs. I am running a shimano tiagra double chainset 52/39 with a square-tapered bottom bracket, shimano 105 front derailler and shimano tiagra front shifters. I have been looking into upgrading to a tripple chainset but am being thoroughly confused as to what is compatible (and still relatively affordable!). Do I need to change BB, shifters and chainset plus deraillers or can I cut corners!? (Should I consider a compact chainset??)
Any advice would be greatly appreciated.