Welcome to 365! You've found a great, easy going and kind community... We have a saying around here: "your project, your rules!" :). So do whatever you want! If you like, you can start from today and then gradually over time add in your older shots... whatever you like!
Yes- your project your rules! You can start posting on day one or you can start in July and go from there. But if you don't want to overload people with all the shots from Jan to Jun, then it's a good idea to start posting a current photo today, and then add the older ones little by little. Welcome to 365!
if you get an ace membership you can have two albums, one for current and one for backdated if you want, for ease of keeping track of both halves of your project.
You can absolutely add your previous pics. I started my journey in Sept, but I added the pics I took the month before because they were the inspiration to get me started on this site.
@melmarie3 I'm in exactly the same position and so started posting at the halfway mark - July 1st. Might just have to keep going to rack up the 365 days on this site.
Do whatever feels good to you
Though i'm constantly posting whole weeks of photos I managed not to upload for various reasons!! :D