Depends on your situation and time availabilities, but summer schools are great opportunities for hands-on training and they typically cover accommodation and food (although that does mean they are very competitive). There are many of these, just search for summer schools in neuroscience online, but the first that come to mind for 2023 are the Transylvanian Experimental Neuroscience Summer School (https://tenss.ro/) and the Amgen Scholars Program (https://amgenscholars.com/).
There are also many courses offered, but these often charge fees, although may also offer financial support, e.g. courses at the MBL (https://www.mbl.edu/neuroscience).