At my early stages my sails had more ducting tape that anything else...
Even with rips like that or even bigger I was able to stick black duct tape, transparent vinyl on both sides and sail a long time till next rip in different location.
So If you don't like to spent more then $5 duct tape or sticker should do the job till you learn to avoid doing this anymore..
So getting newer sail will not solve the problem because soon will looks very similar to that one...