Starting Jan. 1, new California laws affecting everything from what you can recycle to where you can carry a concealed handgun will go on the books. Here’s a rundown of the key bills Gov. Gavin Newsom signed in 2023: CrimeSB 2, which limits where concealed weapons may be carried, is facing a legal challenge. The law requires people wishing to carry firearms in public to be 21 or older and have at least 16 hours of training. It bars them from carrying at schools, courts, government buildings, prisons, hospitals, airports or bars. For the first time in 20 years, California is poised to to the st…