Been a windsurfer for years but was badgered constantly by the sailors to give dinghy sailing a try.. Was immediately hooked.
I’d recomend getting one of the rotomoulded boats.. RS vision.. Topper Xenon or Laser bahia as they’re pretty indistructable.
The Bahia has a bit more room suitable for a family but the RS Vision is the cheapest s/h. All can be sailed single handed if required.
I wouldnt bother with a wooden boat as the maintenance needed is a pain in the ass.
I have a Bahia that I was very lucky to pick up in mint condition for £3k. You’ll get a vision in ok condition for about £2k.
Warning though.. It’s a hell of a lot more exciting than it actually looks.