Vehicle Registration Info: https://www.dmv.ca.gov/portal/dmv/dmv/vr
Note** If your car was bought outside of California and has a rebuilt title, you may need to pay $350 on top of your registration fee. You may be able to forego the fee if you go to a mechanic first to register and then the DMV.
Real ID License Info: https://realid.dmv.ca.gov/
Note** You need a Real ID in order to board flights UNLESS you have a valid passport. We got the Real ID anyway because we were able to provide two forms of proof of address rather than just one.