Using Projects From Github in your project

The quick and dirty way would be using this link :)

...or

you start Xcode --> Source Control --> Check out... --> enter the following:

https://github.com/leverdeterre/CalendarIOS7.git

and then select the directory you want to save this project to et voilà you're done :)

Okay so I put the file into my project but how do I use the delegate and data source methods and how do I connect it to the mainStoryBoard?

Basically you have to add the <CALAgendaCollectionViewDelegate> after the class name of your @interface section and implement the three methods:

- (void)agendaCollectionView:(CALAgendaCollectionView *)agendaCollectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath selectedDate:(NSDate *)selectedDate;

- (BOOL)agendaCollectionView:(CALAgendaCollectionView *)agendaCollectionView canSelectDate:(NSDate *)selectedDate;

- (void)agendaCollectionView:(CALAgendaCollectionView *)agendaCollectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath startDate:(NSDate *)startDate endDate:(NSDate*)endDate;

You create the CalendarViewController with

CALAgendaViewController *agendaVc = [CALAgendaViewController new];
    agendaVc.calendarScrollDirection = UICollectionViewScrollDirectionHorizontal;
    agendaVc.agendaDelegate = self;
    [agendaVc setFromDate:fromDate];
    [agendaVc setToDate:toDate];
    #Select cell style
    agendaVc.dayStyle = CALDayCollectionViewCellDayUIStyleIOS7;

from inside your class.

I don't now, what you mean by "connect it to the mainStoryBoard?" ... e.g. you could create the CalendarViewController via IBAction after a button was pressed if that's what you mean...

Okay so when i try to implement these delegate methods, I don't know where they come from so how do I get them into my project so I can implement them?

NAUSHAD DARUWALLA Jérôme delivers a demo with CalendarIOS7 - you might want to take your time and have a look at it.