The L train is still out, but getting to Manhattan from North Brooklyn should be a little bit easier tomorrow. The M and the J trains are both going over the Williamsburg Bridge. The J will only go as far as Essex Street, but the M will have its full route through midtown reinstated. The 7 train is also running to Manhattan, though you’ll have to a bus to L.I.C. to pick it up – the G train remains suspended (the only line completely out of commission now). The full rundown of service changes is posted at the MTA website.
If you need to get downtown, the East River Ferry is probably your best bet, what the the shortened J and no L service to Manhattan. With the exception of Greenpoint’s India Street landing, the ferry was running regular service as of today (Sunday), and they expect to have India Street open Monday morning. Expect long lines at the ferry, but if it is like last week, everyone will get on.