H0: B1 = 0 null hypothesis, you're just testing if the coefficient is 0 or not, if the coefficient is 0, means that it doesn't have an effect.
Alternate hypothesis is basically the relationship you're resting
if the alternate is =/= 0, two tailed test, means you're just testing if it actually has an effect.
if alternate is > or <0 you're testing if the relationship is greater than or less than.
It's pre self explanatory, doing some exercise will help you get it right (again, past exam papers).
Idk why you didn't get any, as far as I know Brett always post an abundance of past exam papers. I usually just study from the past exams and the solutions. The notes are helpful if you don't get anything but sometimes I find that they're "over" informative (which I guess is good.. cause they're trying to get you to understand the concept and all).