Please help! I honestly don't know how to attempt problems like these, and I have to retake a test and want to get a good grade. Pleease please please help!!

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?