All schools have written policies. Make sure you understand them. Ask about recent tenure decision cases. It may take some time to obtain grants for your research. Make sure that these will be sufficient.
Many academics act as consultants to industry.
This is a useful method of gaining contacts and extra money. Investigate the university's policy on second jobs. There may be a departmental travel budget to go to conferences, or you may need to raise this money yourself. As in industry, benefits packages will differ from school to school. The university's personnel department should be able to help with these issues.