How to Edit Any Video in iMovie on Your Mac: An article on the overall process of making a movie
How to Make a Movie on with iMovie on iPhone or iPad: Instructions on making a movie on iPhone or iPad
iMovie for Mac Audio Tips and Tricks: An 11 minute YouTube video going over editing audio and a few other editing tips.
iMovie for Mac: How to use the Clip Trimmer for Pro Editing: A 10 minute YouTube video for editing clips. Highly recommended to watch
How to edit, trim and adjust audio clips in iMovie: An article on editing audio clips in iMovie
iMovie comes with all Macs by default, and is currently one of the most popular video editing software in the market. It is far from the most advanced, but iMovie is fairly easy to use, making it ideal for beginners as it can be used for school assignments and even for YouTube videos.
iMovie unfortunately does not come with Windows, so if you intend on using a computer on campus and want to use iMovie, make sure you are using a Mac. There are alternatives to iMovie, some of which can be found at this link here as well as here. Some of the principles in this guide might be able to be applied to other software, though it is still recommended to look at guides and/or experiment to determine how many of the settings and options are the same as portrayed in this guide.
When you open up iMovie, you have the option to either open up a previous project or a new project. Select "create new" and you can either make a movie or a trailer. Most projects will focus on movies, though trailers can be fun too.
When you select "movie," you will be met by a screen with three main parts. The upper left corner contains the clips, photos, audio, and resources imported into iMovie that you can use in making your movie. The upper right corner is the program monitor that contains a screen that displays your movie as well as several editing option. The bottom half is the timeline, where the clips and audio you are using is displayed and is also where you can edit your clips and audio too.
Setting up the movie is the easy part so long as you have all the clips, audio, and other files you want to use. All you have to do is drag them to the timeline and put them in order.
iMovie does have the option to record additional audio with a mic option below the movie display in the upper right corner. Make sure you select the part where you want to begin recording as the icon won't appear until you do so.
Make sure everything you use that you didn't create is attributed properly!
There is a lot to discuss when it comes to editing.
After selecting a clip you will see a preview of the clip along with some editing tools in the upper right portion of the window.
Once you play around and get used to these options, you'll be able to make a professional-looking video!
To insert audio, select the audio file you want and then drag it under the clip that you want to use it on.
Another method to adjusting audio, assuming it is for the entire clip in question and not just the audio file, is looking at the bottom of the clip at the blue bar (if you can't see it, go to "settings" on the timeline and select "show waveforms").
Transitions, titles, and credits are relatively simple to insert. You just select the tab they are under (upper left part of interface), select something you like, and then drag them down and position them in your movie however you like.
Unlike with a movie, choosing the "trailer" option gives you the option to choose from one of several templates of varying lengths and content. After selecting the template, the upper half is more or less the same, but the bottom half has a noticeable difference: there are three tabs: outline, storyboard, and shot list instead of the timeline.
To select a specific clip to use in part of the trailer, select the part you want to insert the clip into and then select the part of the clip you want to insert. It will automatically insert the part you select, and even if you get it slightly wrong, you can adjust and select again.