Welcome, Congrats on the New Boat and WELCOME, There is Lots of Good Solid advice here!
The best advice I can give is GO OUT AND SAIL, with lifejacket on and Play,!
It took us awhile to get used to "learn" our boat but now we are comfy with it!
Congrats on Your New Purchase, This is an exciting time for you, family and crew. Your world has changed dramatically to the Fun Side!
We are in the 8th year of ownership and we still learn and have fun when we go out, We sail on the Great Lakes-Salt Free, Shallow water-65' average for Lake...
We started out exactly like you, We wish you well, Please Remember to join the 310 association!
BTW we also sleep with our heads to the stern.
The easy engine access, that our friends are always amazed by and salon layout!
Please keep us updated and CONGRATS!
Also another resource beside SBO and Catalina Yachts is :
Catalina 310 (catalinadirect.com)
if cannot find it one place you surely can Another.
When the 310 was designed Gerry Douglas said he wanted a boat that served drinks for 8, food for 4 and sleeps 2 :D