We're attending our first even tomorrow. (back to school celebration - at the beach! <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/lol.gif" style="border:0px solid;" title="lol">) DS is 2 1/2.
I started looking for other hsers when we made the decision to hs when ds was 4. It was ok w/o one that year, finding random kids at playgrounds to play with but they were all younger. It took until he was 5 before we started hooking up with a few different hs groups, none very convenient. We're still working on finding a group of people that aren't too far to hang out with. Ds is 6 now. We have a few friends we like, some in school and some unschooled.
5 and 1.<br><br>
In our homeschool group right now, we have parents joining with their oldest as young as 2. It's the like-minded families and the homeschooling culture that they are looking for most at that point, which we're happy to provide. <img alt="" class="inlineimg" src="http://www.mothering.com/discussions/images/smilies/smile.gif" style="border:0px solid;" title="smile">
We went to our first gathering of the big local HS group (the Not-Back-To-School picnic) yesterday. DS1 is 3.3 and DS2 is 10 months. (Public school starts at age 4 here -- two years of Kindergarten.)<br><br>
We also made our own small group of homeschooling/homeschooling-to-be families with young children last spring, and was meeting for a park day once a week (although I sort of fell out of that over the summer, since DS1 was potty-learning so going out of the immediate neighbourhood was rather... inconvenient, so I'm not sure if they're still getting together or have just amalgamated into the larger city-wide group.)